MPEC 2004-N22 : 2003 EH1
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M.P.E.C. 2004-N22 Issued 2004 July 5, 16:17 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.
Supported in part by the Steven and Michele Kirsch Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2003 EH1
Revision to MPEC 2003-E27
Additional Observations:
K03E01H C2003 12 24.33869 16 42 52.43 -66 12 20.6 EN022809
K03E01H C2003 12 24.34249 16 42 53.10 -66 12 20.5 EN022809
K03E01H C2003 12 24.34629 16 42 53.87 -66 12 21.5 EN022809
K03E01H C2003 12 24.35022 16 42 54.61 -66 12 21.4 EN022809
K03E01H C2003 12 24.35403 16 42 55.30 -66 12 21.7 EN022809
K03E01H C2003 12 24.35785 16 42 56.04 -66 12 22.4 EN022809
K03E01H C2004 01 06.32478 17 21 56.66 -66 22 07.2 EN022809
K03E01H C2004 01 06.33851 17 21 59.05 -66 22 07.5 EN022809
K03E01H C2004 01 06.35440 17 22 01.70 -66 22 08.1 EN022809
K03E01H C2004 01 06.35750 17 22 02.32 -66 22 08.1 EN022809
K03E01H C2004 01 06.36059 17 22 02.93 -66 22 08.6 EN022809
K03E01H C2004 01 06.36368 17 22 03.52 -66 22 08.5 EN022809
Observer details:
809 European Southern Observatory, La Silla. Observers E. Jehin,
M. Billeres. 3.6-m New Technology Telescope + CCD.
Orbital elements:
2003 EH1
Epoch 2004 July 14.0 TT = JDT 2453200.5 MPC
M 90.15212 (2000.0) P Q
n 0.17831701 Peri. 171.36877 -0.17338690 -0.35065455
a 3.1261336 Node 282.94687 +0.83780942 +0.43869651
e 0.6184611 Incl. 70.79028 +0.51769910 -0.82739758
P 5.53 H 16.7 G 0.15 U 3
Residuals in seconds of arc
030306 699 0.0 0.4+ 030310 540 0.6- 1.8+ 030405 448 0.5- 0.5+
030306 699 0.1- 0.1+ 030312 448 0.3- 0.4+ 030415 413 0.0 0.0
030306 699 0.1+ 0.3+ 030312 448 0.1- 0.1+ 030415 413 0.1- 0.1-
030306 699 0.0 0.0 030312 448 0.2- 0.1+ 030423 413 0.2+ 0.2-
030307 446 0.1- 0.8- 030313 413 0.1- 0.0 030423 413 0.1+ 0.0
030307 446 0.2- 0.9- 030313 413 0.2+ 0.5- 030423 413 0.3- 0.1+
030307 446 0.1- 0.3- 030313 413 0.9+ 0.9- 031224 809 0.2- 0.4+
030307 711 0.2- 0.7+ 030313 413 0.0 1.1- 031224 809 0.5- 0.8+
030307 446 0.1+ 0.2- 030323 587 (2.8- 0.2-) 031224 809 0.1- 0.1+
030307 711 0.5+ 0.0 030323 587 0.3+ 1.3+ 031224 809 0.2- 0.6+
030307 711 0.3+ 0.1+ 030323 587 0.8- 0.9- 031224 809 0.3- 0.6+
030307 926 0.6+ 0.3+ 030324 413 0.2+ 0.1- 031224 809 0.2- 0.2+
030307 926 0.1+ 0.7+ 030324 413 0.3+ 0.2- 040106 809 0.2+ 0.6-
030307 926 0.4+ 0.5- 030324 413 0.5+ 0.2- 040106 809 0.2+ 0.3-
030307 649 0.6+ 0.5- 030325 413 0.1+ 0.1- 040106 809 0.4- 0.3-
030307 649 0.0 0.1- 030325 413 0.0 0.1+ 040106 809 0.2+ 0.2-
030307 649 0.1- 0.6- 030325 413 0.2+ 0.2- 040106 809 0.6+ 0.6-
030310 540 1.2- 0.9+ 030405 448 0.1- 0.2- 040106 809 1.0+ 0.4-
030310 540 0.8- 0.9+ 030405 448 0.3+ 0.0
Ephemeris:
2003 EH1 a,e,i = 3.13, 0.62, 71 q = 1.1927
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2004 07 04 16 42.73 -70 40.5 3.359 4.072 128.6 11.3 23.1
2004 07 14 16 25.54 -68 23.0 3.441 4.111 125.2 11.7 23.2
2004 07 24 16 15.37 -65 56.2 3.545 4.150 120.2 12.2 23.3
2004 08 03 16 10.71 -63 29.5 3.669 4.188 114.2 12.8 23.4
2004 08 13 16 10.21 -61 09.0 3.810 4.225 107.4 13.2 23.5
2004 08 23 16 12.86 -58 58.3 3.963 4.262 100.3 13.5 23.6
2004 09 02 16 17.87 -56 59.2 4.126 4.297 92.9 13.6 23.7
2004 09 12 16 24.67 -55 12.3 4.294 4.331 85.4 13.4 23.8
2004 09 22 16 32.86 -53 37.1 4.463 4.365 77.9 13.0 23.9
2004 10 02 16 42.12 -52 12.8 4.630 4.397 70.4 12.4 24.0
2004 10 12 16 52.19 -50 58.3 4.791 4.429 63.0 11.6 24.0
2004 10 22 17 02.89 -49 52.3 4.944 4.460 55.8 10.6 24.1
2004 11 01 17 14.04 -48 53.9 5.084 4.490 48.6 9.5 24.1
2004 11 11 17 25.50 -48 01.7 5.209 4.519 41.8 8.4 24.1
2004 11 21 17 37.15 -47 14.9 5.318 4.548 35.3 7.2 24.1
This is the presumed parent of the Quadrantid meteors (cf. IAUC 8252).
The recovery observations are still insufficient to shed much light on the
suggested identity with comet C/1490 Y1.
Brian G. Marsden (C) Copyright 2004 MPC M.P.E.C. 2004-N22
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