| Year |
Discoveries* |
Amateur |
Visual |
| 2008 |
134 |
4 |
0 |
| 2007 |
223 |
3 |
0 |
| 2006 |
204 |
2 |
1 |
| 2005 |
221 |
2 |
0 |
| 2004 |
222 |
3 |
2 |
| 2003 |
192 |
1 |
0 |
| 2002 |
179 |
7 |
5 |
| 2001 |
142 |
1 |
1 |
| 2000 |
128 |
1 |
1 |
| 1999 |
129 |
6 |
3 |
| 1998 |
139 |
4 |
2 |
| 1997 |
100 |
4 |
3 |
| 1996 |
44 |
4 |
3 |
| 1995 |
6 |
4 |
4 |
| 1994 |
11 |
6 |
4 |
| 1993 |
10 |
1 |
0 |
| 1992 |
13 |
7 |
7 |
| 1991 |
22 |
6 |
4 |
| 1990 |
10 |
3 |
3 |
|
| Survey |
Official Comet Discoveries |
| SOHO |
1519 |
| LINEAR |
186 |
| Catalina Sky Survey |
64 |
| Siding Spring Survey |
54 |
| NEAT |
52 |
| LONEOS |
42 |
| SPACEWATCH |
40 |
| Credited Discoverer |
Comets |
| McNaught |
44 |
| Shoemaker |
32 |
| Pons |
26 |
| Levy |
22 |
| Brooks |
21 |
| Christensen |
19 |
| Bradfield |
18 |
| Skiff |
16 |
| Barnard |
16 |
| Mueller |
15 |
|
* w/out re-/pre-discoveries
News
2008 October 21
-
New Discovery!:
R. S. McMillan (LPL, Univ. of Arizona) reports his discovery of a new comet on Oct. 19, 2008,
in the course of the Spacewatch Survey.
A. R. Gibbs (Mt. Lemmon) confirmed the cometary nature of the 18m object.
Prediscovery observations by Spacewatch of Sep. 20, Oct. 6 and 10, 2008, were also found.
The orbit for comet P/2008 U1 (McMillan) shows perihelion already on May 12, 2008,
at about 2.5 AU. The period is about 8.1 years. This is the 40th comet for
Spacewatch.
(IAUC 8997, subscription required,
MPEC 2008-U29)
-
K. Kadota (Ageo, Saitama-ken, Japan) has recovered comet P/2001 J1 on Oct. 15, 17,
and 18, 2008, using a 25-cm reflector and CCD. H. Abe (Yatsuka-cho, Shimane-ken, Japan)
also confirmed the comet on Oct. 18. The 16m comet P/2008 T5 (NEAT) will pass perihelion on
Nov. 6, 2008, at about 0.95 AU. The correction to the prediction on MPC 54170 is -0.6 day.
(IAUC 8996, subscription required)
2008 October 09
-
G. V. Williams (SAO) and Syuichi Nakano (Sumoto) have confirmed the suggestion by M. Meyer
that the newly discovered comet P/2008 T3 is identical to the long-lost comet
D/1892 T1 = 1892e = 1892 V (Barnard). Wiliams has extracted 41 positions of 1892 from
literature and re-reduced these for analysis. The resulting orbit for comet
P/2008 T3 = 1892 T1 (Barnard-Boattini) shows perihelion on Oct. 25, 2008, at about
1.1 AU. The period is 5.8 years. Nakano notes that the comet has made 20 revolutions since
1892 and passed 0.3 - 0.4 AU from Jupiter in 1922, 1934 and 2005.
(IAUC 8995, subscription required)
2008 October 08
-
An apparently asteroidal object discovered on Oct. 1, 2008, by Rob D. Cardinal (Rothney
Astrophysical Observatory, Priddis) with the University of Calgary 0.50-m Baker-Nunn camera
has been found cometary after posting on the NEO Confirmation Page. W. H. Ryan (Magdalena
Ridge), G. Hug (Scranton), Y. Ikari (Moriyama) and J. Young (Table Mountain) confirmed the
cometary nature of the 14.5m object. The first orbit for comet C/2008 T2 (Cardinal)
shows a perihelion at about 1.2 AU on Jun. 16, 2009. The comet may then reach 8m
but will not be favourably placed.
(IAUC 8993, subscription required,
MPEC 2008-T88)
-
New Discovery!:
A. Boattini reports his discovery of a new comet on Oct. 7, 2008, in the course of the
Catalina Sky Survey. Boattini confirmed the
comet with exposures taken at Mt. Lemmon. Prediscovery observations by LINEAR of Sep.
28 and 30, and by Catalina of Sep. 29, were also found. The first orbit for comet
P/2008 T3 (Boattini) indicates perihelion on Oct. 25, 2008, at about 1.1 AU. The
period is about 5.9 years. This is the 63rd for Catalina.
M. Meyer (Limburg) suggests that this comet is identical with the long lost comet
D/1892 T1 (Barnard). Backward integrations of the orbit show almost perfect
identity.
(IAUC 8993, subscription required,
MPEC 2008-T89)
-
New Discovery!:
R. E. Hill reports his discovery of a new comet on Oct. 8, 2008, in the course of the
Catalina Sky Survey. Boattini confirmed the
comet with exposures taken at Mt. Lemmon. The first orbit for comet P/2008 T4 (Hill)
indicates perihelion on Sep. 21, 2008, at about 2.4 AU. The period is about 9.2 years.
This is the 64th for Catalina.
(IAUC 8979, subscription required,
MPEC 2008-S48)
2008 October 03
-
New Discovery!:
A. Boattini reports his discovery of another new comet on Oct. 01, 2008, in the course of the
Mt. Lemmon Survey. R. E. Hill
(Mt. Lemmon) was able to confirm the comet the next day. After
the object was placed on the NEO Confirmation Page P. Birtwhistle (Great Shefford), R.
Ligustri (Talmassons), J. E. McGaha (Tucson), R. Holmes and H. Devore (Charleston), J. Young
(Table Mountain), E. Guido, G. Sostero, and P. Camilleri (remotely from near Mayhill)
also confirmed the cometary nature. Prediscovery images by Spacewatch of Sep. 2, and 21, were also
detected. The orbit for the 17.5m comet P/2008 T1 (Boattini) indicates
perihelion already on Feb. 25, 2008, at about 3.0 AU. The comet made a close approach to
Jupiter (0.03 AU) in April 2003. This is the 22nd comet for the Mt. Lemmon Survey.
(IAUC 8988, subscription required,
MPEC 2008-T30)
2008 October 01
2008 September 30
-
New Discovery!:
A. Boattini reports his discovery of a new comet on Sep. 29, 2008, in the course of the
Mt. Lemmon Survey. After
the object was placed on the NEO Confirmation Page D. T. Durig (Sewanee), E. Guido, G.
Sostero, and P. Camilleri (remotely near Mayhill), and J. Young (Table Mountain) confirmed
the cometary nature. The first and preliminary orbit for the 18m comet
C/2008 S3 (Boattini) indicates perihelion on Apr. 4, 2011, at about 3.1 AU. This is
the 21st comet for the Mt. Lemmon Survey.
(IAUC 8986, subscription required,
MPEC 2008-S96)
2008 September 28
-
R. Kracht (Elmshorn) has successfully linked the SOHO sunskirter comets C/2001 D1 (SOHO),
C/2004 X7 (SOHO) and C/2008 S2 (SOHO). The linked orbit by B. G. Marsden (MPC)
indicates a perihelion distance of 0.047 AU, an inclination of 20° and a period of about
3.78 years.
This reduces the SOHO comet count by 2.
(MPEC 2008-S82)
2008 September 27
2008 September 26
-
S. Nakano suggested already in 2004
(Nakanao Note 2070), that comet
P/2001 X2 (Scotti)- now P/202P/Scotti - is identical with an asteroidal object recorded
by E. C. Slipher and C. W. Tombaugh on Nov. 27, and Dec. 3, 1929, which was published by
H. L. Giclas in 1940, and designated 1929 WW. However, the November 27 position did
not fit as perfect as the position of December. B. A. Skiff has now re-examined this
position which confirms the linkage with 202P. Skiff adds that on both 1929 plates the object
looks weakly cometary.
(IAUC 8981, subscription required)
-
Further SOHO comets (all named SOHO):
Designation Group Discoverer Notes
C/2008 N6 Kreutz H. Su
C/2008 N7 Kreutz T. Hoffman
C/2008 O4 --- M. Kusiak
C/2008 R7 Kracht R. Kracht 33rd member of the Kracht group, = C/2002 S4, 5, 11 ??
Official SOHO comets: 1508
(MPEC 2008-S67)
2008 September 25
-
R. Kracht (Elmshorn) has identified another short-periodic sunskirter comet among the SOHO
comets. C/1999 X3 (SOHO), C/2004 E2 (SOHO) and C/2008 K10 (SOHO) are
one and the same comet. The linked orbit by B. G. Marsden (MPC) indicates a perihelion distance
of 0.048 AU, an inclination of 6° and a period of about 4.22 years. The comet passed
0.058 AU from Earth on Jan. 13, 2000. S. F. Hönig (Bonn) remarks that this comet
falls in a group controlled by the 1:3 resonance with Jupiter, similar to the Alinda group
of minor planets.
This reduces the SOHO comet count by 2.
(MPEC 2008-S49)
2008 September 24
-
New Discovery!:
R. E. Hill reports his discovery of a new comet on Sep. 23, 2008, in the course of the
Catalina Sky Survey. K. Smalley (Minor Planet
Center) was able to identify the comet with an apparently asteroidal object discovered on
August 25, in the course of the LINEAR
survey, which was then designated 2008 QP20. After posting on the
NEO Confirmation Page G. Muler (Lanzarate), J. E. McGaha (Tucson), H. Devore and R. Holmes
(Charleston), E. Guido, G. Sostero, and P. Camilleri (remotely near Mayhill), D. T. Durig
(Sewanee) and A. C. Gilmore and P. M. Kilmartin (Mt. John) were able to confirm the cometary
nature of the 17.5m object. The first orbit for comet
P/2008 QP20 (LINEAR-Hill) indicates perihelion on Nov. 2, 2008, at about
1.7 AU. This is the 186th comet for LINEAR and the 62nd for Catalina.
(IAUC 8979, subscription required,
MPEC 2008-S48)
-
Further astrometry of comet 2008 R1 show this to be of short period. The comet moves
in an orbit similar to that of a main belt minor planet. P/2008 R1 (Garradd) already
passed perihelion on Jul. 25, 2008, at about 1.8 AU. The period is about 4.5 years. It seems
that this object belongs to the small group of "main belt comets".
(MPEC 2008-S46)
2008 September 23
-
Additional two components of comet 205P/Giacobini have been discovered by D. T. Durig
and K. N. Hatchett (Cordell-Lorenz Observatory, Sewanee). The first and brightest
(4m fainter than the main comet) was observed on Sep. 17, 19, and 22. The second
component (5m fainter) was observed on Sep. 19 and 22. The discoverers have
posted images and animations.
Ephemerides for these two objects can be obtained by applying a correction for the time
of perihelion of +0.014 and +0.133, respectively, to the
orbital elements of MPC 63822.
(IAUC 8978, subscription required)
2008 September 22
-
Further observations of comet 2008 S1 showed this to be a comet of short-period.
Additionally, a minor planet discovered by A. Boattini in the course of the Catalina survey
on May 2, 2008, and named 2008 JK was identified with the comet by B. G. Marsden. The
new orbit for comet P/2008 S1 (Catalina-McNaught) indicates perihelion on Oct. 1, 2008,
at about 1.2 AU. The period is about 6.8 years.
(MPEC 2008-S26,
IAUC 8978, subscription required))
2008 September 19
-
New Discovery!:
R. H. McNaught reports his discovery of a new comet on Sep. 17, 2008, in the course of the
Siding Spring Survey. After posting on the
NEO Confirmation Page D. Mayes and J. Young (Table Mountain), E. Guido, G. Sostero, and P.
Camilleri (remotely from Moorook), and A. Herring and R. Holmes (Charleston) were able to
confirm the cometary nature of the 16.5m object. The first and preliminary orbit
for comet C/2008 S1 (McNaught) indicates perihelion on Sep. 21, 2008, at about 1.4 AU.
This is the 54th comet for the Siding Spring Survey and the 44th for
McNaught.
(IAUC 8977, subscription required,
MPEC 2008-S10)
2008 September 18
-
New permanent numberings for periodic comets:
201P/LONEOS (P/2001 R1 = P/2008 Q4)
202P/Scotti (P/2001 X2 = P/2008 R2)
203P/Korlevic (P/1999 WJ7 = P/2008 R4)
204P/LINEAR-NEAT (P/2001 TU80 = P/2008 R5)
205P/Giacobini (P/1896 R2 = P/2008 R6)
(IAUC 8976, subscription required)
2008 September 11
-
Rediscovery!:
On Sep. 10, 2008, an apparent new comet was discovered by Japanese amateurs K. Itagaki (Teppo-cho,
Yamagata) and H. Kaneda (Minami-ku, Sapporo) on CCD patrol images obtained with a 21-cm reflector.
They subsequently confirmed the 13.5m comet using a 60-cm reflector. After posting on
the NEO Confirmation Page the comet was confirmed by Y. Ikari (Moriyama, Shiga-ken), K. Kadota
(Ageo, Saitama-ken), V. Gonano and E. Guido (Remanzacco), R. Ligustri (Talmassons), J. J. Gomez
(Gandia), J. A. Henriquez (Tenerife), P. Camilleri and G. Sostero (remotely at Catania) and F.
Castellani (Monte Baldo).
M. Meyer (Limburg) suggested that the comet is identical with the long lost periodic comet
P/1896 R2 (Giacobini), which was last seen in January 1897, based on predictions and
the available new astrometry. This was then confirmed by S. Nakano (Sumoto), who also noted that
the comet has made 17 revolutions since then and passed 0.51 AU from Earth in September 1962, and
0.81 AU from Jupiter in January 1992. The current orbit for comet P/2008 R6 (Giacobini)
shows perihelion on Sep. 10, 2008, at about 1.5 AU. The period is about 6.7 years. The comet seems
to have been rediscovered during an outburst.
(IAUC 8975, subscription required,
MPEC 2008-R60)
2008 September 10
-
Recovery!:
G. V. Williams (MPC) has identified recovery observations of comet P/1999 WJ7 (Korlevic)
obtained on Sep. 3, 2008, by T. Bressi in the course of the Spacewatch survey. Upon a request by B.
G. Marsden for confirmation, J. V. Scotti (Spacewatch) obtained observations on Sep. 9, which
confirmed the identification. The 20m comet P/2008 R4 (Korlevic) will pass
perihelion on Feb. 8, 2010, at about 3.2 AU. The correction to the prediction on MPC 59598 is
Delta T = -0.35 day. The period is about 10 years.
(IAUC 8974, subscription required,
MPEC 2008-R53)
-
Recovery!:
G. V. Williams (MPC) has also identified recovery observations of comet P/2001 TU80 (LINEAR-NEAT)
obtained on Sep. 8, 2008, by Scotti in the course of the Spacewatch survey. Upon request Scotti
obtained observations on Sep. 9, which confirmed the identification. Comet P/2008 R5 (LINEAR-NEAT)
will pass perihelion on Dec. 9, 2008, at about 1.9 AU. The correction to the prediction on MPC 54171 is
Delta T = -0.3 day. The period is about 7.0 years.
(IAUC 8974, subscription required,
MPEC 2008-R54)
2008 September 08
-
New Discovery!:
An apparently asteroidal object discovered on Sep. 7, 2008, in the course of the
LINEAR Survey has been found cometary
after posting on the NEO Confirmation Page by E. Pettarin (Farra d'Isonzo), R. Holmes (Charleston),
G. Hug (Scranton), J. Young (Table Mountain), and by P. Camilleri, G. Sostero, and E. Guido
(remotely at Trunkey). The first and preliminary orbit for comet C/2008 R3 (LINEAR)
shows perihelion on Nov. 26, 2008, at about 1.8 AU. This is the 185th comet for
LINEAR.
(IAUC 8973, subscription required,
MPEC 2008-R51)
2008 September 06
-
Recovery!:
On Sep. 5, J. V. Scotti (Spacewatch, Kitt Peak) recovered comet P/2001 X1 (Scotti)
at a magnitude of 20.5m. Later, incidental observations in the course of the
Mt. Lemmon survey of Sep. 13, 2007, at about 21.5m and of Oct. 8, 2007, at about
21.7m were also found. Comet P/2008 R2 (Scotti) will pass perihelion on
Feb. 7, 2009, at about 2.5 AU. The correction to the prediction on MPC 56802 is Delta T = -0.15 day.
The period is about 7.3 years.
(IAUC 8971, subscription required,
MPEC 2008-R30)
2008 September 04
-
New Discovery!:
G. J. Garradd reports his discovery of a new comet on Sep. 02, 2008, in the course of the
Siding Spring Survey. After posting on the
NEO Confirmation Page G. Sostero, P. Camilleri, and E. Guido (remotely from Grove Creek-Skylive
Observatory) and C. Jacques and E. Pimentel (Belo Horizonte) were able to confirm the
cometary nature of the 18.5m object. The first and preliminary orbit for comet
C/2008 R1 (Garradd) indicates perihelion on Nov. 08, 2008, at about 1.7 AU.
This is the 53rd comet for the Siding Spring Survey and the 12th for
Garradd.
(IAUC 8969, subscription required,
MPEC 2008-R22)
2008 September 03
-
Recovery!:
On August 31, M. Jäger (Stixendorf) recovered comet P/2001 R1 (LONEOS) using a
20-cm reflector and CCD. The 16.5m comet showed a 3' tail. The recovery was confirmed
by G. Sostero, E. Guido and P. Camilleri (Skylive Observatory) on September 1. Comet
P/2008 Q4 (LONEOS) already passed perihelion on Aug. 4, 2008, at about 1.35 AU. The
correction to the prediction on MPC 54169 is Delta T = -0.42 day. The period is about 6.4 years.
(CBET 1490, subscription required,
MPEC 2008-R09)
2008 August 29
-
New Discovery!:
On August 27, M. Ory discovered an apparently stellar object on images taken with a 61-cm
reflector and CCD at Jura Observatory
(Switzerland). After posting the 17.5m object on the NEO Confirmation Page
A. Knöfel (Schönbrunn), L. Buzzi (Varese), R. Holmes (Charleston) and A. C.
Gilmore and P. M. Kilmartin (Mt. John) were then able to confirm the cometary nature. The
first and preliminary orbit for comet P/2008 Q2 (Ory) indicates perihelion on Oct.
23, 2008, at about 1.4 AU. The period is about 6.0 years. This is the fourth amateur
comet discovery in 2008.
(IAUC 8967, subscription required,
MPEC 2008-Q51)
-
New Discovery!:
G. J. Garradd reports his discovery of a new comet on Aug. 27, 2008, in the course of the
Siding Spring Survey. After posting on the
NEO Confirmation Page A. C. Gilmore and P. M. Kilmartin (Mt. John) were able to confirm the
cometary nature of the 19m object. The first and preliminary orbit for comet
C/2008 Q3 (Garradd) indicates perihelion on Jul. 01, 2009, at about 2.5 AU.
This is the 52nd comet for the Siding Spring Survey and the 11th for
Garradd.
(IAUC 8968, subscription required,
MPEC 2008-Q52)
2008 August 21
-
New Discovery!:
On AUgust 18, S. Maticic discovered an apparently stellar object in the course of the
Comet and Asteroid Search Program (PIKA) at
Crni Vrh Observatory (Slovenia) using a 60-cm
Deltagraph and CCD. H. Mikuz observed the object one day later and noted a cometary
appearance. After posting the 17.5m object on the NEO Confirmation Page
R. Ligustri (Talmassons), R. Holmes and H. Devore (Charleston), K. Sarneczky (Konkoly),
J. M. Aymami (Tiana), V. Gonano, E. Guido, and G. Sostero (Remanzacco), S. Foglia, P.
Concari, D. Crespi, G. Galli, O. Lesca, and S. Minuto (Novara Veveri) were then able to
confirm the cometary nature. The first and preliminary orbit for comet C/2008 Q1 (Maticic)
indicates perihelion on Jan. 02, 2008, at about 2.9 AU. This is the second amateur discovery
in 2008.
(IAUC 8966, subscription required,
MPEC 2008-Q12)
2008 August 09
2008 August 09
2008 August 02
-
New Discovery!:
A. Boattini reports his discovery of a new comet on July 29, in the course of the
Mt. Lemmon Survey. After
the object was placed on the NEO Confirmation Page R. Holmes (Charleston) obtained images
of the comet, which were measured by S. Foglia and L. Buzzi and confirmed the cometary
nature. The first and preliminary orbit for the 18.5m comet C/2008 O3 (Boattini)
indicates perihelion already on Jun. 1, 2008, at about 2.6 AU. This is the 20th
comet for the Mt. Lemmon Survey.
(IAUC 8964, subscription required,
MPEC 2008-P05)
2008 August 1
-
New Discovery!:
R. H. McNaught reports his discovery of a new comet on Jul. 28, 2008, in the course of
the Siding Spring Survey. After posting on the
NEO Confirmation Page A. Boattini (Mt. Lemmon), G. Muler (Lanzarate), R. Holmes (Charleston),
N. Teamo (Punaauia), P. Birtwhistle (Great Shefford), L. Buzzi (Varese) and J. M. Aymami
(Tiana) were able to confirm the cometary nature of the 17.5m object. The first
and preliminary orbit for comet C/2008 O2 (McNaught) indicates perihelion on Nov. 13,
2009, at about 1.3 AU. It is likely that the comet is of short period with q between 3 and
4 AU. This is the 50th comet for the Siding Spring Survey and the 43rd
for McNaught.
(IAUC 8963, subscription required,
MPEC 2008-P04)
-
Further SOHO comets (all named SOHO):
Designation Group Discoverer Notes
C/2008 O1 Kreutz H. Su
Official SOHO comets: 1498
(MPEC 2008-P01)
-
"The Smithsonian Astrophysical Observatory announces that the 2008 Edgar Wilson Award
for the discovery of comets (cf. IAUC 6936, 8854) is being divided among the following two
individuals for the discovery of C/2008 C1: Tao Chen (Suzhou City, Jiangsu province, China)
and Xing Gao (Urumqi, Xinjiang province, China)."
(IAUC 8962, subscription required)
2008 July 26
2008 July 24
-
Further SOHO comets (all named SOHO):
Designation Group Discoverer Notes
C/2008 K6 Kreutz H. Su
C/2008 K7 Meyer J. Ruan 90th member of the Meyer group
C/2008 K8 Kreutz J. Ruan
C/2008 K9 Kreutz G. Pappa
C/2008 K10 G. Sun
C/2008 K11 Kreutz R. Kracht
C/2008 L4 Kreutz M. Kusiak
C/2008 L5 Kreutz H. Su
C/2008 L6 Kreutz R. Kracht Kracht 2 group, = C/2002 R5?
C/2008 L7 Kreutz R. Kracht Kracht 2 group
C/2008 L8 Kreutz M. Mazzucato
C/2008 L9 Kreutz B. Zhou, M. Uchina
C/2008 L10 Kreutz M. Uchina
C/2008 L11 Kreutz M. Kusiak 91st member of the Meyer group
C/2008 L12 Kreutz M. Kusiak
C/2008 L13 Kreutz M. Kusiak
Official SOHO comets: 1492
(MPEC 2008-O15,
MPEC 2008-O16,
MPEC 2008-O23,
MPEC 2008-O24)
2008 July 7
-
New Discovery!:
An apparently asteroidal object, discovered on Jul. 1, 2008, by Robert E. Holmes, Jr.,
(Charleston) was identified as cometary after placement on the NEO Confirmation Page by
P. Birtwhistle (Great Shefford), L. Buzzi (Varese), S. Foglia (analysing further images
by Holmes), and J. Lacruz (La Canada). The first orbit for the 19.5m comet
C/2008 N1 (Holmes) shows perihelion on Sep. 24, 2009, at about 2.8 AU.
(IAUC 8958, subscription required,
MPEC 2008-N18)
-
New Discovery!:
An apparently asteroidal object, discovered on Mar. 31, 2008, in the course of the
Mt. Lemmon Survey, and
designated 2008 FK75, was independently rediscovered on Jul. 1, in the course
of the Siding Spring Survey. The object was
placed on the NEO Confirmation Page prior the identification and noted as cometary by
J. Young and M. Hicks (Table Mountain) and R. E. Holmes (Charleston). The orbit for the
19m comet
C/2008 FK75 (Lemmon-Siding Spring) indicates perihelion on Sep. 30, 2010,
at about 4.5 AU. This is the 19th comet for the Mt. Lemmon Survey and the
49th for the Siding Spring Survey.
(IAUC 8958, subscription required,
MPEC 2008-N18)
accesses since Oct. 10, 1999.