MPEC 2018-H07 : 2018 GZ4
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M.P.E.C. 2018-H07 Issued 2018 Apr. 16, 16:39 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 GZ4
Observations:
K18G04Z* C2018 04 13.30469 11 13 48.903+01 53 27.00 21.7 wUEH007F51
K18G04Z C2018 04 13.31609 11 13 48.540+01 53 41.49 21.5 wUEH007F51
K18G04Z C2018 04 13.32747 11 13 48.184+01 53 56.06 21.5 wUEH007F51
K18G04Z C2018 04 13.33888 11 13 47.825+01 54 10.65 21.5 wUEH007F51
K18G04Z |C2018 04 14.05340 11 13 30.24 +02 09 35.8 21.1 VuEH007807
K18G04Z |C2018 04 14.05914 11 13 30.11 +02 09 43.4 21.3 VuEH007807
K18G04Z |C2018 04 14.06504 11 13 29.93 +02 09 50.8 21.3 VuEH007807
K18G04Z KC2018 04 14.17295 11 13 27.45 +02 11 52.6 21.1 RoEH007291
K18G04Z KC2018 04 14.17821 11 13 27.29 +02 11 59.7 21.4 RoEH007291
K18G04Z KC2018 04 14.18344 11 13 27.16 +02 12 06.5 21.3 RoEH007291
K18G04Z C2018 04 14.23735 11 13 25.60 +02 13 15.2 21.1 GUEH007G96
K18G04Z C2018 04 14.24767 11 13 25.28 +02 13 27.8 21.3 GUEH007G96
K18G04Z C2018 04 14.25281 11 13 25.11 +02 13 34.5 20.8 GUEH007G96
K18G04Z KC2018 04 15.15449 11 13 05.51 +02 32 37.4 oEH007711
K18G04Z KC2018 04 15.15861 11 13 05.47 +02 32 42.9 oEH007711
K18G04Z KC2018 04 15.16272 11 13 05.37 +02 32 47.7 oEH007711
K18G04Z KC2018 04 15.18066 11 13 04.92 +02 33 10.6 oEH007691
K18G04Z KC2018 04 15.19322 11 13 04.61 +02 33 26.3 oEH007691
K18G04Z KC2018 04 15.20552 11 13 04.27 +02 33 42.2 oEH007691
K18G04Z C2018 04 16.14492 11 12 46.08 +02 53 22.3 21.1 GUEH007I52
K18G04Z C2018 04 16.14822 11 12 46.02 +02 53 26.9 20.6 GUEH007I52
K18G04Z KC2018 04 16.21205 11 12 44.56 +02 54 46.0 oEH007691
K18G04Z KC2018 04 16.22696 11 12 44.21 +02 55 05.3 20.9 RoEH007691
K18G04Z KC2018 04 16.24176 11 12 43.86 +02 55 24.0 oEH007691
Observer details:
291 LPL/Spacewatch II. Observer R. A. Mastaler. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. H. Bressi. 0.9-m f/3
reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
807 Cerro Tololo. Observers T. Linder, R. Holmes. 0.61-m f/6.5 astrograph
+ CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer A. D. Grauer. 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.
I52 Steward Observatory, Mt. Lemmon Station. Observer 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 GZ4 Earth MOID = 0.2922 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 329.70821 (2000.0) P Q
n 0.27476974 Peri. 60.25066 -0.24444356 +0.96819449
a 2.3432760 Node 195.86985 -0.94335132 -0.25018150
e 0.4685344 Incl. 11.25153 -0.22435602 -0.00294115
P 3.59 H 20.5 G 0.15 U 7
Residuals in seconds of arc
180413 F51 0.1+ 0.1+ 180414 291 0.0 0.0 180415 691 0.1- 0.1+
180413 F51 0.0 0.0 180414 291 0.3+ 0.2+ 180415 691 0.2+ 0.1-
180413 F51 0.1+ 0.0 180414 G96 0.2+ 0.4+ 180415 691 0.1- 0.3+
180413 F51 0.1+ 0.1- 180414 G96 0.1- 0.1- 180416 I52 0.5- 0.1-
180414 807 1.2- 0.0 180414 G96 0.5- 0.0 180416 I52 0.3- 0.4+
180414 807 0.7- 0.3+ 180415 711 0.1+ 0.4- 180416 691 0.0 0.5-
180414 807 0.8- 0.2+ 180415 711 1.1+ 0.1- 180416 691 0.0 0.1+
180414 291 0.1+ 0.4- 180415 711 1.2+ 0.5- 180416 691 0.1- 0.3+
Ephemeris:
2018 GZ4 a,e,i = 2.34, 0.47, 11 q = 1.2454
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 17 11 34 52.9 -07 13 51 0.7010 1.6907 170.8 5.4 21.3
...
2018 04 01 11 21 43.7 -02 31 33 0.6275 1.6039 160.3 12.1 21.2
...
2018 04 09 11 16 01.7 +00 20 41 0.6067 1.5589 150.7 18.3 21.3
...
2018 04 15 11 13 08.6 +02 29 28 0.5984 1.5261 143.5 23.0 21.4
2018 04 16 11 12 48.5 +02 50 27 0.5975 1.5207 142.3 23.8 21.4
2018 04 17 11 12 31.1 +03 11 14 0.5968 1.5154 141.1 24.6 21.4
...
2018 04 23 11 11 48.0 +05 10 30 0.5952 1.4838 134.4 29.0 21.5
...
2018 05 01 11 13 44.3 +07 30 42 0.5987 1.4435 126.1 34.3 21.6
...
2018 05 16 11 26 32.2 +10 41 03 0.6159 1.3748 113.1 42.6 21.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H07
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