MPEC 2018-H04 : 2018 GW4
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2018-H03
Read MPEC 2018-H05
M.P.E.C. 2018-H04 Issued 2018 Apr. 16, 16:28 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2018 GW4
Observations:
K18G04W* C2018 04 11.41752 16 02 54.09 +23 42 05.6 20.2 GUEH004G96
K18G04W C2018 04 11.41895 16 02 54.35 +23 42 08.1 21.6 GUEH004G96
K18G04W C2018 04 11.42039 16 02 54.58 +23 42 10.0 21.4 GUEH004G96
K18G04W C2018 04 11.42178 16 02 54.78 +23 42 12.7 21.7 GUEH004G96
K18G04W KC2018 04 11.48928 16 03 05.15 +23 44 05.4 21.7 RoEH004291
K18G04W KC2018 04 11.49152 16 03 05.50 +23 44 09.1 21.4 RoEH004291
K18G04W KC2018 04 11.49376 16 03 05.87 +23 44 12.9 21.9 RoEH004291
K18G04W KC2018 04 13.39380216 08 22.56 +24 38 08.6 21.6 VuEH004H21
K18G04W KC2018 04 13.40551716 08 24.51 +24 38 28.4 21.3 VuEH004H21
K18G04W C2018 04 13.45008 16 08 32.28 +24 39 50.1 20.6 GUEH004I52
K18G04W C2018 04 13.45950 16 08 33.87 +24 40 06.1 21.6 GUEH004I52
K18G04W C2018 04 13.46367 16 08 34.52 +24 40 13.1 21.9 GUEH004I52
K18G04W VC2018 04 15.41495 16 14 21.55 +25 37 45.8 oEH004711
K18G04W VC2018 04 15.41841 16 14 22.36 +25 37 58.9 oEH004711
K18G04W KC2018 04 15.42186 16 14 23.01 +25 38 04.4 oEH004711
K18G04W C2018 04 15.46479916 14 30.56 +25 39 20.2 21.1 GUEH004H01
K18G04W C2018 04 15.46871116 14 31.24 +25 39 27.2 21.3 GUEH004H01
K18G04W C2018 04 15.48031416 14 33.28 +25 39 48.0 21.3 GUEH004H01
K18G04W C2018 04 15.48561716 14 34.22 +25 39 57.5 21.0 GUEH004H01
K18G04W C2018 04 16.47296 16 17 39.88 +26 10 00.9 22.2 GUEH004I52
K18G04W C2018 04 16.47632 16 17 40.47 +26 10 06.5 21.8 GUEH004I52
K18G04W C2018 04 16.47980 16 17 41.13 +26 10 13.5 22.1 GUEH004I52
K18G04W C2018 04 16.48318 16 17 41.72 +26 10 19.2 21.6 GUEH004I52
Observer details:
291 LPL/Spacewatch II. Observer R. A. Mastaler. 1.8-m f/2.7 reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers B. M. Africano,
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers E. J. Christensen,
J. A. Johnson. Measurers B. M. Africano, E. J. Christensen, D. C. Fuls,
A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson,
G. J. Leonard, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
Orbital elements:
2018 GW4 Earth MOID = 0.0918 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 336.94593 (2000.0) P Q
n 0.26092539 Peri. 190.48410 +0.24729803 +0.94001752
a 2.4254472 Node 94.13584 -0.87106249 +0.32189198
e 0.6249633 Incl. 13.62600 -0.42437462 -0.11292746
P 3.78 H 21.7 G 0.15 U 9
Residuals in seconds of arc
180411 G96 0.7- 0.1- 180413 H21 0.6+ 0.7- 180415 H01 0.1- 0.3+
180411 G96 0.2- 0.0 180413 I52 0.4+ 0.7+ 180415 H01 0.1- 0.4+
180411 G96 0.0 0.5- 180413 I52 1.1+ 0.4+ 180415 H01 0.1- 0.4+
180411 G96 0.2- 0.1- 180413 I52 0.7+ 0.2+ 180416 I52 0.3+ 0.7+
180411 291 0.2- 0.2+ 180415 711 (2.6- 5.9-) 180416 I52 0.0 0.2+
180411 291 0.1- 0.1+ 180415 711 0.2+ 1.0+ 180416 I52 0.3+ 0.9+
180411 291 0.2+ 0.2+ 180415 711 0.8+ 0.3+ 180416 I52 0.1- 0.4+
180413 H21 0.2+ 0.3- 180415 H01 0.0 0.3+
Ephemeris:
2018 GW4 a,e,i = 2.43, 0.62, 14 q = 0.9096
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 17 15 09 39.6 +14 33 04 0.6903 1.5206 128.0 31.0 23.1
...
2018 04 01 15 38 17.7 +19 20 41 0.5144 1.3881 130.2 33.3 22.4
...
2018 04 09 15 56 37.2 +22 36 26 0.4320 1.3182 129.3 36.0 21.9
...
2018 04 15 16 13 05.9 +25 25 26 0.3752 1.2666 127.4 39.0 21.6
2018 04 16 16 16 10.5 +25 55 34 0.3662 1.2580 126.9 39.6 21.6
2018 04 17 16 19 22.1 +26 26 17 0.3572 1.2496 126.5 40.2 21.5
...
2018 04 23 16 41 35.9 +29 42 50 0.3061 1.1995 122.9 44.7 21.2
...
2018 05 01 17 24 07.8 +34 34 27 0.2451 1.1356 115.8 53.0 20.9
...
2018 05 16 20 11 08.3 +40 41 39 0.1641 1.0291 91.7 79.1 20.6
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H04
Read MPEC 2018-H03
Read MPEC 2018-H05
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)