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Historic Comet Close Approaches

HISTORIC COMET CLOSE APPROACHES PRIOR TO 2006
The following table shows close-Earth approachs by historic comets prior to 2006, sorted by close-approach distance from closest to farthest.

1 AU = ~150 million kilometers
1 LD = Lunar Distance = ~384,000 kilometers

Note: The comet of 1491 (1491 B1) has been removed from this table since its orbit is no longer thought to be reliable. See I. Hasegawa, Publ. Astronomical Society of Japan, 2002, vol. 54, pp. 1091-1099.

Comet
Name
Designation Date of Close
Earth Approach
Miss
Distance
(AU)
Miss
Distance
(LD)
Note
Lexell D/1770 L1 1770-Jul-01.7 0.0151 5.9  
Tempel-Tuttle 55P/1366 U1 1366-Oct-26.4 0.0229 8.9  
IRAS-Araki-Alcock C/1983 H1 1983-May-11.5 0.0313 12.2  
Halley 1P/ 837 F1 837-Apr-10.5 0.0334 13.0  
Biela 3D/1805 V1 1805-Dec-09.9 0.0366 14.2  
Comet of 1743 C/1743 C1 1743-Feb-08.9 0.0390 15.2  
Pons-Winnecke 7P/ 1927-Jun-26.8 0.0394 15.3  
Comet of 1014 C/1014 C1 1014-Feb-24.9 0.0407 15.8 *
Comet of 1702 C/1702 H1 1702-Apr-20.2 0.0437 17.0  
Comet of 1132 C/1132 T1 1132-Oct-07.2 0.0447 17.4 *
Comet of 1351 C/1351 W1 1351-Nov-29.4 0.0479 18.6 *
Comet of 1345 C/1345 O1 1345-Jul-31.9 0.0485 18.9 *
Comet of 1499 C/1499 Q1 1499-Aug-17.1 0.0588 22.9 *
Schwassmann-Wachmann 3 73P/1930 J1 1930-May-31.7 0.0617 24.0  
Sugano-Saigusa-Fujikawa C/1983 J1 1983-Jun-12.8 0.0628 24.4  
Comet of 1080 C/1080 P1 1080-Aug-05.7 0.0641 24.9 *
Great comet C/1760 A1 1760-Jan-08.2 0.0681 26.5  
Comet of 1472 C/1471 Y1 1472-Jan-22.9 0.0690 26.9 *
Comet of 400 C/ 400 F1 400-Mar-31.1 0.0767 29.8 *
LINEAR P/2000 G1 1921-Mar-09.9 0.0775 30.1  
Comet of 1556 C/1556 D1 1556-Mar-13.0 0.0835 32.5 *
Schweizer C/1853 G1 1853-Apr-29.1 0.0839 32.7  
Bouvard-Herschel C/1797 P1 1797-Aug-16.5 0.0879 34.2  
Halley 1P/ 374 E1 374-Apr-01.9 0.0884 34.4  
Halley 1P/ 607 H1 607-Apr-19.2 0.0898 34.9  
Comet of 568 C/ 568 O1 568-Sep-25.7 0.0918 35.7 *
Messier C/1763 S1 1763-Sep-23.7 0.0934 36.3  
Tempel C/1864 N1 1864-Aug-08.4 0.0964 37.5  
Machholz 2-A 141P-A 1905-Jan-05.2 0.0968 37.7  
LINEAR P/2000 G1 2000-Mar-04.7 0.0974 37.9  
Schmidt C/1862 N1 1862-Jul-04.6 0.0982 38.2  
Comet of 390 C/ 390 Q1 390-Aug-18.9 0.1002 39.0 *
Hyakutake C/1996 B2 1996-Mar-25.3 0.1018 39.6  
Seki C/1961 T1 1961-Nov-15.2 0.1019 39.7  

* - Miss distance is uncertain because comet's orbit is relatively poorly determined.

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