MPEC 2008-X81 : COMET P/2008 X4
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M.P.E.C. 2008-X81 Issued 2008 Dec. 12, 18:06 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET P/2008 X4
Observations:
PK08X040 4S2008 12 08.23922 12 56 13.9 -17 06 29 EX081C50
PK08X040 4s2008 12 08.23922 2 +0.64885343 -0.36918908 -0.15521273 EX081C50
PK08X040 4S2008 12 08.35033 12 56 02.4 -16 59 29 EX081C50
PK08X040 4s2008 12 08.35033 2 +0.64967530 -0.36818235 -0.15477072 EX081C50
PK08X040 4S2008 12 08.46144 12 55 50.7 -16 53 02 EX081C50
PK08X040 4s2008 12 08.46144 2 +0.65049521 -0.36717390 -0.15432797 EX081C50
PK08X040 4S2008 12 08.51699 12 55 45.9 -16 49 04 EX081C50
PK08X040 4s2008 12 08.51699 2 +0.65090440 -0.36666906 -0.15410634 EX081C50
PK08X040 4S2008 12 08.57255 12 55 40.0 -16 45 56 EX081C50
PK08X040 4s2008 12 08.57255 2 +0.65131313 -0.36616375 -0.15388450 EX081C50
PK08X040 4S2008 12 08.68366 12 55 29.6 -16 38 46 EX081C50
PK08X040 4s2008 12 08.68366 2 +0.65212902 -0.36515194 -0.15344034 EX081C50
PK08X040 4S2008 12 08.73922 12 55 21.9 -16 35 41 EX081C50
PK08X040 4s2008 12 08.73922 2 +0.65253626 -0.36464535 -0.15321796 EX081C50
PK08X040 4S2008 12 08.79477 12 55 17.3 -16 31 56 EX081C50
PK08X040 4s2008 12 08.79477 2 +0.65294293 -0.36413841 -0.15299544 EX081C50
PK08X040 4S2008 12 08.85033 12 55 11.1 -16 28 18 EX081C50
PK08X040 4s2008 12 08.85033 2 +0.65334914 -0.36363102 -0.15277273 EX081C50
PK08X040 4S2008 12 08.90588 12 55 07.2 -16 25 35 EX081C50
PK08X040 4s2008 12 08.90588 2 +0.65375485 -0.36312319 -0.15254983 EX081C50
PK08X040 4S2008 12 09.01699 12 54 55.9 -16 18 15 EX081C50
PK08X040 4s2008 12 09.01699 2 +0.65456477 -0.36210629 -0.15210351 EX081C50
PK08X040 4S2008 12 09.07255 12 54 48.6 -16 14 59 EX081C50
PK08X040 4s2008 12 09.07255 2 +0.65496897 -0.36159720 -0.15188008 EX081C50
PK08X040 4S2008 12 09.12810 12 54 46.0 -16 11 27 EX081C50
PK08X040 4s2008 12 09.12810 2 +0.65537267 -0.36108770 -0.15165648 EX081C50
PK08X040 4S2008 12 09.23922 12 54 36.5 -16 04 23 EX081C50
PK08X040 4s2008 12 09.23922 2 +0.65617859 -0.36006740 -0.15120872 EX081C50
PK08X040 4S2008 12 09.29477 12 54 31.0 -16 01 35 EX081C50
PK08X040 4s2008 12 09.29477 2 +0.65658079 -0.35955663 -0.15098458 EX081C50
PK08X040 4S2008 12 09.35032 12 54 24.6 -15 57 47 EX081C50
PK08X040 4s2008 12 09.35032 2 +0.65698245 -0.35904549 -0.15076028 EX081C50
PK08X040 4S2008 12 09.40588 12 54 17.8 -15 54 35 EX081C50
PK08X040 4s2008 12 09.40588 2 +0.65738366 -0.35853385 -0.15053577 EX081C50
PK08X040 4S2008 12 09.46144 12 54 17.3 -15 51 17 EX081C50
PK08X040 4s2008 12 09.46144 2 +0.65778433 -0.35802184 -0.15031110 EX081C50
PK08X040 4S2008 12 09.51699 12 54 10.8 -15 47 31 EX081C50
PK08X040 4s2008 12 09.51699 2 +0.65818447 -0.35750944 -0.15008628 EX081C50
PK08X040 4S2008 12 09.57254 12 54 07.3 -15 44 50 EX081C50
PK08X040 4s2008 12 09.57254 2 +0.65858414 -0.35699659 -0.14986126 EX081C50
PK08X040 4S2008 12 09.62810 12 54 01.5 -15 41 31 EX081C50
PK08X040 4s2008 12 09.62810 2 +0.65898330 -0.35648332 -0.14963606 EX081C50
PK08X040 4S2008 12 09.68365 12 53 57.0 -15 37 59 EX081C50
PK08X040 4s2008 12 09.68365 2 +0.65938194 -0.35596965 -0.14941069 EX081C50
PK08X040 4S2008 12 09.73921 12 53 54.6 -15 34 25 EX081C50
PK08X040 4s2008 12 09.73921 2 +0.65978009 -0.35545554 -0.14918514 EX081C50
PK08X040 4S2008 12 09.79477 12 53 47.3 -15 31 24 EX081C50
PK08X040 4s2008 12 09.79477 2 +0.66017771 -0.35494104 -0.14895942 EX081C50
PK08X040 4S2008 12 09.85032 12 53 43.6 -15 28 37 EX081C50
PK08X040 4s2008 12 09.85032 2 +0.66057484 -0.35442612 -0.14873352 EX081C50
PK08X040 4S2008 12 09.90588 12 53 38.9 -15 25 00 EX081C50
PK08X040 4s2008 12 09.90588 2 +0.66097145 -0.35391078 -0.14850745 EX081C50
PK08X040 4S2008 12 09.96144 12 53 35.2 -15 21 53 EX081C50
PK08X040 4s2008 12 09.96144 2 +0.66136758 -0.35339500 -0.14828119 EX081C50
Observer details:
C50 STEREO-B. STEREO-SECCHI imager HI1. Comet detection by A. Watson,
measurements by K. Battams, reductions by B. G. Marsden.
Orbital elements:
P/2008 X4
T 2008 Dec. 18.34 TT MPC
q 0.4957 (2000.0) P Q
Peri. 336.25 +0.14129 -0.97372
Node 105.24 +0.93536 +0.07221
e 1.0 Incl. 10.67 +0.32425 +0.21599
From 27 observations 2008 Dec. 8-9.
From a similar orbit computation by R. Kracht from his own measurements of
the comet's position, M. Meyer has suggested that comet P/2008 X4 = P/2003 K2
(Christensen), predicted on MPC 56802 to return with T = 2009 Jan. 8.9.
A linkage of the above observations to those of P/2003 K2 yields the
following result:
P/2003 K2 = 2008 X4 (Christensen)
Epoch 2003 Mar. 22.0 TT = JDT 2452720.5
T 2003 Apr. 7.84519 TT MPC
q 0.5487520 (2000.0) P Q
n 0.17241212 Peri. 345.46426 +0.18015222 -0.96783116
a 3.1971095 Node 93.92923 +0.91913597 +0.10203798
e 0.8283600 Incl. 10.13976 +0.35033449 +0.22998065
P 5.72
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5
T 2008 Dec. 19.96098 TT MPC
q 0.5348106 (2000.0) P Q
n 0.17403416 Peri. 345.76428 +0.17564998 -0.96842040
a 3.1772133 Node 93.89279 +0.91967919 +0.09730070
e 0.8316730 Incl. 10.21560 +0.35119407 +0.22955284
P 5.66
Residuals in seconds of arc
K035Q 703 (4.8+ 0.3+) K035S 340 1.6- 1.9+ K0362 340 0.7- 1.4+
K035Q 703 (4.7+ 0.5+) K035S 340 1.6+ 1.4+ K0362 340 0.2+ 0.1-
K035Q 703 (3.3+ 0.1-) K035S 340 (1.2+ 2.0+) K0362 340 (0.5- 2.4-)
K035Q 703 (6.0+ 2.1-) K035S 340 (3.0+ 1.5+) K0362 372 1.7- 0.7+
K035Q 938 0.2- 1.2- K035S 340 0.1+ 0.4- K0362 340 0.9+ 1.1+
K035Q 938 0.9- 0.3+ K035S 340 (1.1- 2.1+) K0362 372 1.4- 0.2-
K035Q 938 1.4+ 0.2- K035S 367 0.3+ 0.0 K0362 620 0.6- 0.1+
K035Q 938 0.6- 0.0 K035S 367 0.6- 0.1- K0362 620 0.6- 0.4+
K035Q 938 0.6+ 0.8- K035S 367 1.4+ 1.0- K0362 620 0.0 0.3-
K035Q 938 0.5- 0.6+ K035S 367 0.5- 0.0 K0363 H72 0.5- 0.5-
K035Q 938 0.3- 0.5- K035S 620 0.2+ 0.1+ K0363 H72 0.6+ 0.2+
K035Q 938 1.2+ 0.5+ K035S 620 0.4+ 0.3+ K0363 H41 1.2- 0.4+
K035Q 938 0.1+ 0.5- K035S 213 0.2+ 0.7+ K0363 H72 (3.8+ 0.6+)
K035Q 938 (2.0+ 0.7-) K035S 620 0.4- 0.1- K0363 H41 0.7+ 0.4+
K035Q 938 0.2+ 0.2- K035S 213 0.0 0.8+ K0363 H72 (1.6+ 2.5+)
K035Q 938 1.8+ 0.2+ K035S 620 0.2- 0.1- K0363 H41 0.1- 0.6+
K035Q 938 0.4+ 0.6+ K035S 166 0.7+ 0.4+ K0363 H41 0.4- 0.9+
K035Q 938 0.4+ 0.4+ K035S 166 0.5- 0.7+ K0363 H41 0.6- 1.0+
K035Q 938 0.4- 0.1+ K035S 213 0.3- 0.7+ K0363 118 0.4+ 1.6-
K035Q 938 1.2+ 0.0 K035S 166 (2.5- 1.2+) K0363 118 1.3+ 0.5-
K035Q 938 0.0 0.5+ K035S A32 (0.5- 2.5+) K0363 118 0.5- 0.6-
K035Q 938 1.4+ 0.3+ K035S A32 0.5+ 0.5- K0365 620 1.9- 0.5+
K035Q 938 0.5- 0.7+ K035T H41 0.9+ 0.3+ K0366 620 0.1+ 0.3+
K035Q 938 0.5+ 0.3- K035T H41 0.2+ 0.1- K0367 620 0.4- 0.4-
K035Q 938 1.3- 0.5+ K035T H41 (3.4+ 7.4-) K0367 620 1.3- 0.1-
K035Q 938 1.1+ 0.2- K035T 750 0.1+ 0.6- K0367 620 1.6- 0.7+
K035Q 938 0.9- 0.3+ K035T 900 0.7- 0.7+ K0368 046 (0.3+ 2.1+)
K035Q 938 1.5+ 1.6- K035T 900 0.6- 1.4+ K0368 046 1.6- 0.7+
K035Q 938 0.5+ 0.2+ K035T A46 (2.2+ 0.8-) K0368 046 0.5+ 1.3+
K035Q 938 0.5- 0.6+ K035T A46 (0.8+ 2.1-) K036A 620 0.8- 0.8-
K035Q 938 0.4- 0.2+ K035T A46 0.0 0.7- K036A 620 0.6- 0.0
K035Q 938 1.0+ 0.2+ K035T A46 (0.8+ 2.4-) K036A 620 0.4+ 0.9-
K035Q 938 0.2+ 1.1+ K035T A46 1.0+ 1.7- K036A 204 1.3+ 0.6-
K035R 734 0.3+ 0.2+ K035T 118 0.4+ 0.8+ K036A 204 (5.0+ 6.2-)
K035R 750 0.8- 0.9- K035T A46 0.1- 1.0- K036F 620 0.7+ 0.7-
K035R 750 (2.4- 0.5-) K035T 213 0.3- 0.8+ K036F 118 (4.9+ 1.7-)
K035R 734 0.2- 0.1- K035T 213 1.5- 0.6+ K036F 118 0.8- 0.9+
K035R 750 0.8- 0.6+ K035T 118 0.3- 1.4+ K036G 118 0.5+ 1.1+
K035R 333 1.1+ 0.6+ K035T 213 (2.8- 0.9+) K036G 118 1.0- 0.3+
K035R 333 0.3- 0.7+ K035T 118 0.4+ 0.0 K036G 118 1.2- 0.9+
K035R 333 1.1+ 0.2- K035T A32 0.2+ 1.2+ K036H 620 0.8- 0.8-
K035R 333 0.0 0.7+ K035T A32 0.2- 1.0- K036H 620 0.6- 1.9-
K035R 333 0.8+ 0.2+ K035U H72 0.9+ 0.3- K036H 620 0.4+ 0.5-
K035R 333 1.1+ 0.5- K035U H72 (3.2- 0.5-) K036I 620 0.8- 1.0-
K035R 926 0.2- 0.5+ K035U H41 (0.3+ 2.0-) K036J H41 (2.1- 1.5+)
K035R 926 0.0 0.3- K035U H41 1.4- 0.4- K036J H41 (3.6- 0.3+)
K035R 926 0.0 0.0 K035U H72 1.0+ 0.1- K036J H41 0.7- 1.5+
K035R 699 (2.5+ 1.4-) K035U 673 1.5- 0.1- K036K 360 0.5+ 0.5-
K035R 673 0.0 0.6- K035U 673 0.6- 0.3- K036K 360 0.9+ 1.4-
K035R 699 (2.8+ 0.4-) K035U 673 1.1- 0.1- K036K 360 0.1+ 1.1-
K035R 673 0.7- 0.5- K035U 673 0.1- 0.3- K036K 118 (2.4+ 2.0-)
K035R 699 (2.2+ 0.6-) K035U 921 (1.6+ 2.1+) K036K 118 (2.1+ 0.9-)
K035R 333 1.4+ 0.4- K035U 921 (1.2- 2.6+) K036K 215 0.7+ 1.2+
K035R 333 (3.6+ 2.5-) K035U 673 0.5- 0.5- K036M H41 1.1- 0.2+
K035R 673 0.0 0.6- K035U 673 1.2- 0.3- K036M H41 (2.8- 0.8+)
K035R 333 (2.7+ 4.1-) K035U 673 0.9- 0.2- K036M H41 0.4- 0.2-
K035R 673 0.3- 0.3- K035U 673 1.3- 0.5- K036N H41 (0.4+ 3.1-)
K035R 333 1.5+ 1.1- K035U 587 (2.1- 2.2+) K036N H41 1.4+ 0.4-
K035R 333 1.5+ 0.3- K035U 587 (1.5+ 3.2-) K036N H41 1.1+ 1.6-
K035R 333 0.2- 1.2- K035U 587 1.7- 0.2- K036O H41 0.3+ 1.0+
K035R 699 (2.8+ 1.3-) K035U 232 (2.1+ 1.5-) K036O H41 (2.5+ 0.2+)
K035R 333 0.7+ 0.4- K035U 232 (1.9- 2.8+) K036O H41 0.9+ 0.4-
K035R 333 1.6+ 0.2- K035U J87 (1.7- 2.1+) K036P H41 1.8+ 1.8+
K035R 673 0.4- 0.3- K035U J87 0.2- 0.2- K036P H41 (2.2- 1.4-)
K035R 703 (0.9+ 2.0-) K035U J87 0.5+ 0.3- K036S H41 0.8+ 0.1+
K035R 734 1.8+ 0.4- K035U J87 0.5- 0.5- K036S H41 0.1+ 0.6+
K035R 854 0.5+ 0.1- K035V H72 0.4- 0.3- K036S H41 (2.0+ 1.7+)
K035R 734 (2.7+ 0.3+) K035V H72 1.4+ 0.3+ K036T H41 0.2+ 1.5-
K035R 703 (2.5+ 0.3+) K035V H72 (0.9+ 2.5+) K036T H41 0.6+ 1.1-
K035R 333 1.7+ 0.1- K035V H72 (4.3- 3.3+) K036T H41 0.8+ 0.4+
K035R 703 (2.8+ 0.3-) K035V H41 (0.6- 2.5+) K0372 H41 (3.8+ 3.9-)
K035R 333 0.0 1.0- K035V H41 0.2- 1.1- K0372 H41 (2.4+ 4.2-)
K035R 333 1.9+ 0.8+ K035V H41 0.5- 1.2- K08C8 C50 9.8- 14.1+ Y
K035R 670 0.7- 0.8+ K035V H41 1.0- 0.1- K08C8 C50 5.3- 11.8+ Y
K035R 333 (2.1+ 0.2+) K035V H41 0.2+ 0.3- K08C8 C50 (6.6- 21.4-)Y
K035R 333 0.9+ 0.3- K035V H41 0.5+ 0.1+ K08C8 C50 6.7+ 7.4+ Y
K035R 333 (2.9+ 0.7-) K035V A01 0.9+ 1.5- K08C8 C50 3.4+ 13.4- Y
K035R 333 1.2+ 0.3+ K035V A01 (7.7- 0.0 ) K08C8 C50 14.8+ 0.7+ Y
K035R 333 (0.4+ 2.8-) K0361 360 0.7- 0.6+ K08C8 C50(16.5- 21.5-)Y
K035R 673 0.1+ 0.1+ K0361 360 0.9- 0.1+ K08C8 C50 4.1- 3.0- Y
K035R 703 1.0- 1.0+ K0361 367 0.8- 0.4+ K08C8 C50 15.4- 8.9+ Y
K035R 670 0.6- 0.9+ K0361 367 1.1- 0.7- K08C8 C50 (5.6+ 33.6-)Y
K035R 673 0.1- 0.2- K0361 360 0.9- 0.0 K08C9 C50 4.9- 3.0- Y
K035R 673 0.2+ 0.1- K0361 900 (2.1- 1.7-) K08C9 C50(35.0- 10.9-)Y
K035R 673 0.0 0.2+ K0361 367 0.5- 0.3- K08C9 C50 1.7+ 2.2- Y
K035R 176 0.7+ 0.4+ K0361 367 1.2- 0.6+ K08C9 C50 11.2+ 16.8+ Y
K035R 176 0.5+ 0.3+ K0361 372 1.9- 1.0- K08C9 C50 4.0+ 16.9- Y
K035R 176 0.3+ 0.2+ K0361 349 (2.2- 0.3+) K08C9 C50 17.0- 10.0+ Y
K035R 176 0.1+ 0.1+ K0361 900 0.4+ 0.1- K08C9 C50(44.4- 1.4+)Y
K035R 176 0.1- 0.0 K0361 349 1.7- 0.1+ K08C9 C50 18.3+ 0.6- Y
K035S H41 0.7- 1.2+ K0361 349 1.4- 0.7- K08C9 C50 (6.3- 25.9+)Y
K035S H41 0.4- 0.0 K0362 H72 1.7+ 1.0- K08C9 C50 11.6+ 11.9- Y
K035S H41 0.2- 1.1- K0362 H72 1.0- 0.8- K08C9 C50 4.4- 11.3- Y
K035S 673 0.4+ 0.2- K0362 H72 1.1- 0.5+ K08C9 C50 2.4- 2.9+ Y
K035S 673 0.6- 0.4+ K0362 H72 1.0+ 0.9+ K08C9 C50(29.2+ 19.7+)Y
K035S 673 0.1- 0.4+ K0362 703 0.5+ 1.5+ K08C9 C50 10.7- 4.0+ Y
K035S 673 (2.0- 0.2+) K0362 703 1.9+ 0.6+ K08C9 C50 (0.6+ 25.0-)Y
K035S 673 0.5- 0.1+ K0362 703 0.5+ 0.5+ K08C9 C50 3.2- 3.6- Y
K035S 673 0.1- 0.2+ K0362 703 1.2+ 0.1- K08C9 C50 6.7+ 11.6- Y
P/2003 K2 = 2008 X4 (Christensen)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2008 08 12 20 17.85 -30 59.5 1.141 2.112 157.3 10.7 17.0
2008 08 22 19 55.75 -32 30.8 1.092 2.000 143.8 17.4 16.7
2008 09 01 19 34.84 -33 32.2 1.068 1.884 130.2 24.2 16.4
2008 09 11 19 17.54 -34 03.7 1.060 1.764 117.2 30.5 16.1
2008 09 21 19 05.32 -34 12.3 1.060 1.639 105.1 36.2 15.8
2008 10 01 18 58.69 -34 06.0 1.060 1.510 94.2 41.4 15.4
2008 10 11 18 57.46 -33 51.0 1.053 1.377 84.3 46.2 15.0
2008 10 21 19 01.00 -33 30.4 1.032 1.239 75.3 51.0 14.5
2008 10 31 19 08.48 -33 04.8 0.993 1.098 67.1 56.4 13.9
2008 11 10 19 18.73 -32 32.5 0.929 0.953 59.5 63.5 13.1
2008 11 20 19 29.52 -31 51.0 0.837 0.811 51.9 73.7 12.2
2008 11 30 19 35.83 -30 55.2 0.716 0.678 43.4 90.0 11.1
2008 12 02 19 35.65 -30 41.5 0.689 0.654 41.4 94.4 10.8
2008 12 04 19 34.68 -30 26.4 0.661 0.632 39.2 99.4 10.6
2008 12 06 19 32.72 -30 09.6 0.632 0.611 36.8 104.8 10.4
2008 12 08 19 29.56 -29 50.6 0.604 0.592 34.2 110.9 10.1
2008 12 10 19 24.99 -29 28.4 0.576 0.575 31.2 117.6 9.9
2008 12 12 19 18.80 -29 02.1 0.549 0.561 27.8 125.0 9.7
2008 12 14 19 10.79 -28 30.1 0.523 0.550 24.1 133.1 9.5
2008 12 16 19 00.88 -27 50.7 0.500 0.542 19.8 141.9 9.3
2008 12 18 18 49.11 -27 02.3 0.479 0.536 15.2 151.3 9.2
2008 12 20 18 35.69 -26 03.4 0.462 0.535 10.1 161.2 9.1
2008 12 22 18 21.06 -24 53.5 0.450 0.537 4.7 171.4 9.1
2008 12 24 18 05.78 -23 33.5 0.442 0.542 1.1 178.0 9.1
2008 12 26 17 50.51 -22 05.7 0.439 0.550 6.8 167.8 9.1
2008 12 28 17 35.88 -20 33.6 0.440 0.562 12.5 157.8 9.2
2008 12 30 17 22.36 -19 00.9 0.446 0.576 17.9 148.3 9.3
2009 01 01 17 10.25 -17 31.1 0.454 0.593 23.1 139.4 9.5
2009 01 03 16 59.70 -16 06.7 0.466 0.612 27.9 131.2 9.7
2009 01 05 16 50.67 -14 49.3 0.480 0.632 32.4 123.7 9.9
2009 01 07 16 43.08 -13 39.3 0.495 0.655 36.5 116.9 10.1
2009 01 09 16 36.77 -12 36.8 0.511 0.679 40.2 110.7 10.4
2009 01 19 16 18.63 -08 52.4 0.591 0.812 55.5 87.6 11.5
2009 01 29 16 11.49 -06 30.7 0.657 0.954 67.7 72.7 12.4
2009 02 08 16 06.52 -04 36.3 0.703 1.099 79.2 61.9 13.1
2009 02 18 15 59.71 -02 44.7 0.733 1.240 90.9 52.8 13.8
2009 02 28 15 49.00 -00 46.7 0.755 1.378 103.5 44.3 14.3
2009 03 10 15 33.51 +01 16.8 0.775 1.511 116.9 35.9 14.7
2009 03 20 15 13.55 +03 17.8 0.804 1.640 131.0 27.3 15.2
2009 03 30 14 50.58 +05 03.3 0.852 1.764 144.8 19.0 15.6
2009 04 09 14 27.10 +06 19.8 0.923 1.884 156.5 12.3 16.1
2009 04 19 14 05.66 +07 00.7 1.023 2.000 161.3 9.2 16.6
Brian G. Marsden (C) Copyright 2008 MPC M.P.E.C. 2008-X81
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