C/1368 G1    Orbit taken from Kronk (2000)
C/1760 A1    First recorded observation by Dunn (ENG) on Jan 01
C/1797 P1    Formerly known as Bouvard-Herschel-Lee
C/1854 Y1    First observed 3 weeks earlier by Colla (ITA)
P/1867 B1    Comet named after the director of Marseilles Observatory.
C/1870 K1    Formerly known as Winnecke-Tempel
C/1877 R1    Formerly known as Swift-Borrelly-Block
C/1893 N1    First observed by Sperra (USA) at the given dates
P/1894 W1    (Re-)Discoverer was E. Swift, Jr., not Lewis Swift!
C/1896 C1    Lamp never discovered the comet (cf. Kronk 1984)!
C/1898 L1    More discovery details in AJ439
C/1903 M1    Prediscovery images of Harvard Observatory of May 29 and 31
C/1904 H1    Prediscovery images of Harvard Observatory of Mar 16, Apr 6 and 13 in AJ561,82
P/1906 Q1    Prediscovery image. Discovery on Aug 23.1
C/1920 X1    Discovery by Skjellerup at Dec 13
P/1927 V1    Prediscovery images back to March 04, 1902 by Reinmuth (GER)
P/1928 D1    Prediscovery images by Reinmuth of January 29.11
C/1930 E1    First observation. Comet was confirmed and announced on March 11, 1930
C/1939 H1    Also known as minor planet 1939 CB
C/1959 Q2    Pre-Discovery by Kozik on Aug. 23.99 (ICQ 106, April 1998, p.84) and Kanai on January 26.85
C/1968 H1    Pre-Discovery, Independent discoveries by Sato and Fujikawa on April 30
C/1968 N1    Independent discovery by Fujikawa on July 6.77
C/1968 Q2    Independent discovery by Ito on September 2.77
C/1970 B1    Independent discoveries on Jan. 26 also given in the IAUC
C/1970 K1    More about the discovery circumstances and independent discoveries in the additional IAUCs 2248, 2250, 2251, and 2253
C/1970 U1    Independent discoveries by Tago and Kobayashi on October 20.42
C/1975 T1    Independent discovery by G. Casari (ITA)
C/1975 T2    Independent discovery by G. Casari (ITA) IAUC 2849 and Okazaki and Huruyama on October 5.8
C/1975 X1    Independent discovery by S. Utsunomiya (JAP) on Nov. 30.8
C/1976 J1    Prediscovery on 1976 04 27.310
D/1977 C1    Also known as minor planet 1977 DV3
P/1977 UB    Also known as minor planet (2060) Chiron
C/1978 G2    Comet was not confirmed until 1992, Discovery year was given wrong on IAUC 3662 (IAUC 5471, 5866)
P/1983 J3    Discovery by Vavrova as minor planet 1983 JG
C/1984 V1    Prediscovery by Mori on November 13.42
D/1985 H1    Discovery by Mrkos as minor planet 1984 JD
P/1986 UD    Initially discovered as minor planet 1986 UD
C/1987 B1    Independent discovery by Mitsuma on January 20.43
C/1987 U3    Discovery date is for prediscovery exposure (Discovery on Oct. 18.423)
C/1987 W2    Presdiscovery images by Shoemaker on Nov. 22
C/1988 P1    Independent discoveries by Takamizawa, Yanaka, Terasako, Irie and Fujikawa at August 8.74 - 8.8
P/1989 E1    Already observed as a minor planet in 1986 (IAUC 4752)
C/1989 W1    Independent discovery in IAUC 4908
C/1990 E1    Independent discovery by Ohshita on March 17.467
P/1991 A1    Independent recovery by Kiuchi on January 7.476
C/1992 F1    Independent discovery by Mori on April 2.81
P/1995 S1    Independent discoveries in IAUCs 6228-30
C/1996 B1    Independent discovery by Osawa on January 27.823
C/1997 K2    No official naming given until now. Discovered by the SWAN instrument aboard the SOHO spacecraft.
C/1998 G3    Orbit and corrected discovery data in MPEC 2000-A37
C/1998 G4    Corrected discovery data in MPEC 1999-D02
C/1998 H2    Corrected discovery data in MPEC 1999-D03
C/1998 J2    Corrected discovery data in MPEC 1999-D04
C/1998 K7    Corrected discovery data in MPEC 1999-A24
C/1998 K8    Corrected discovery data in MPEC 1999-C21
C/1998 K9    Corrected discovery data in MPEC 1999-A25
C/1998 K10   Corrected discovery data in MPEC 1999-A26
C/1998 K11   Corrected discovery data in MPEC 1999-A27
C/1998 L1    Corrected discovery data in MPEC 1999-A28
C/1998 M7    Corrected discovery data in MPEC 1999-C20
P/1998 S1    Prediscovery observation by LONEOS on Sep. 17.452
P/1998 U2    Prediscovery images by LONEOS on Sep. 14.412 (IAUC 7036)
P/1998 VS24  Prediscovery observations of Oct. 24 and 28 from Visnjan (HRV) given in IAUC
P/1998 WG22  Recovery of 1939 TN by LINEAR, identification by Nakano.
P/1998 Y2    Prediscovery images by LINEAR on Sep. 23 and Oct. 28/29 (MPEC 1998-Y41)
C/1999 F1    Prediscovery images by Spacewatch on Mar. 13 (MPEC 1999-H09)
C/1999 F2    Several prediscovery images by LINEAR, earliest on June 18, 1998 (MPEC 1999-L10)
C/1999 J2    Prediscovery images by LINEAR on May 12 (MPEC 1999-K08)
C/1999 K1    Revised first observation in MPEC 1999-K30
C/1999 T2    Prediscovery images by LONEOS and LINEAR on 09/25 and 10/05 (MPEC 1999-T64)
P/1999 XB69  Prediscovery observations by LINEAR on Nov.16 (MPEC 2000-D39)
C/1999 XS87  Prediscovery observations by LINEAR on Nov.4/5 (MPEC 2000-A43)
P/1999 XN120 Prediscovery observations by LINEAR on Nov.3, 9 and 12,(MPEC 2000-D40)
P/1999 X1    Prediscovery images by LINEAR on 10/10 and 12/07 (MPEC 1999-X24)
C/2000 A1    Prediscovery images by LINEAR on 01/04 (MPEC 2000-A46)
C/2000 B4    Prediscovery images by LINEAR on 01/02 (MPEC 2000-D09)
C/2000 CT54  Prediscovery images by LINEAR on 01/28 (MPEC 2000-D10)
P/2000 C1    Prediscovery images by LINEAR on 01/04 and 08 (MPEC 2000-C30)
P/2000 ET90  Prediscovery images by LINEAR and Catalina Sky Survey on Feb. 02, and Mar. 01, respectively (MPEC 2000-G52)
C/2000 K1    Prediscovery images by LINEAR of May 18, 1999 and other following dates (1999 LW24, 1999 NW13)
C/2000 O1    Prediscovery images by LINEAR of Dec. 12 and 17, 1998, Oct. 31, Nov. 01, and Dec. 13, 1999 (1998 XA70, 1999 UJ10) (MPEC 2000-O22)
C/2000 OF8   Discovery observations in MPEC 2000-P03
P/2000 S1    Prediscovery images by LINEAR of Aug. 26, 2000 (MPEC 2000-S60)
P/2000 S2    Recovery of D/1984 W1 (Shoemaker 2), identification by Nakano (IAUC 7499)
C/2000 S3    Presdicovery images by LINEAR of Sep. 20, 2000, (IAUC 7501)
P/2000 S4    Presdicovery images by LINEAR of Sep. 01, 2000, (IAUC 7502)
C/2000 SV74  Prediscovery images by LINEAR of Sep. 05, 2000 (MPEC 2000-U07)
P/2000 SO253 Identification in IAUC 7548
P/2000 WT168 Prediscovery images by LINEAR of Sep. 09, Nov. 02, and 21, 2000 (MPEC 2000-Y21)
                                 by U.K. Schmidt of 1978/03/06 and 1986/03/14 (IAUC 7600, MPEC 2001-F17)
C/2000 Y1    Prediscovery images by LINEAR of Oct. 24, Nov 02, and 29, 2000 (MPEC 2000-Y06)
P/2000 Y3    Prediscovery images by LINEAR of Nov. 29 and Dec. 21, 2000 (MPEC 2000-Y47)
C/2001 A2    Prediscovery images by LONEOS and LINEAR of Jan. 03, 05, and 06, 2001 (MPEC 2001-B05)
C/2001 C1    Prediscovery images by LONEOS and LINEAR of Apr. 29, and May 3, 2000 (MPEC 2001-H23)
P/2001 H5    Prediscovery images by LINEAR of Mar. 20, 2001 (MPEC 2001-H37)
C/2001 HT50  Prediscovery images by LINEAR of Mar 03, NEAT of Mar 21, LONEOS of Apr 23, and 26 (MPEC 2001-J31)
P/2001 J1    Prediscovery images by Spacewatch of Oct. 7, 2000 (MPEC 2001-K43)
P/2001 K1    Prediscovery images by LONEOS (Feb. 02, Apr. 25, May 18) and LINEAR (Apr. 14) (MPEC 2001-K17)
C/2001 K5    Prediscovery images by LINEAR of Apr. 30 (MPEC 2001-K40)
C/2001 Q1    Prediscovery images by LONEOS of July 16 (MPEC 2001-Q18)
P/2001 R1    Prediscovery images by LINEAR of Aug. 19 (MPEC 2001-S05)
P/2001 R6    Prediscovery images by LINEAR of Aug. 19 (MPEC 2001-S55)
C/2001 RX14  Prediscovery images by NEAT and LONEOS of Aug. 28 (MPEC 2001-U46)
P/2001 T3    Prediscovery images by LINEAR of Oct. 11 (MPEC 2001-T58)
C/2001 T4    Prediscovery images by LONEOS of Aug. 27 (MPEC 2001-U41)
P/2001 X3    Prediscovery images by LINEAR of Sep. 10, and Oct. 17, 2001 (MPEC 2001-Y15)
C/2002 A1    Prediscovery images by LINEAR of Dec. 13, and 17, 2001 (MPEC 2002-A62)
C/2002 A2    Prediscovery images by LINEAR of Nov. 19, Dec. 13, 17, and 18, 2001 (MPEC 2002-A62)