MPEC 2018-R16 : 2007 RZ8
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M.P.E.C. 2018-R16 Issued 2018 Sept. 5, 00:05 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
2007 RZ8
Revision to MPEC 2007-R40
Additional Observations:
K07R08Z C2018 09 04.24996 22 37 56.58 -15 08 41.3 18.6 GVER016703
K07R08Z C2018 09 04.25500 22 37 55.88 -15 08 07.5 19.0 GVER016703
K07R08Z C2018 09 04.26005 22 37 55.18 -15 07 34.7 19.6 GVER016703
K07R08Z C2018 09 04.26509 22 37 54.46 -15 07 01.6 19.2 GVER016703
K07R08Z C2018 09 04.38331 22 37 37.51 -14 53 48.3 19.4 GVER016I52
K07R08Z C2018 09 04.38564 22 37 37.15 -14 53 33.1 19.4 GVER016I52
K07R08Z C2018 09 04.38582 22 37 37.15 -14 53 31.6 19.4 GVER016I52
K07R08Z C2018 09 04.38857 22 37 36.74 -14 53 13.3 18.9 GVER016I52
K07R08Z KC2018 09 04.41708 22 37 39.19 -14 48 10.6 19.6 GVER016474
K07R08Z KC2018 09 04.41922 22 37 38.88 -14 47 56.3 19.5 GVER016474
K07R08Z KC2018 09 04.42029 22 37 38.74 -14 47 49.7 19.5 GVER016474
K07R08Z KC2018 09 04.42313 22 37 38.36 -14 47 30.4 19.7 GVER016474
K07R08Z KC2018 09 04.89277 22 36 45.85 -13 57 06.7 19.5 GVER016587
K07R08Z KC2018 09 04.89341 22 36 45.70 -13 57 00.7 19.4 RqER016K63
K07R08Z KC2018 09 04.89577 22 36 45.45 -13 56 46.6 19.6 GVER016587
K07R08Z KC2018 09 04.89598 22 36 45.43 -13 56 45.0 19.7 GVER016587
K07R08Z KC2018 09 04.89634 22 36 45.34 -13 56 40.6 19.3 RqER016K63
K07R08Z KC2018 09 04.89986 22 36 44.86 -13 56 17.1 19.7 RqER016K63
K07R08Z KC2018 09 04.90864 22 36 43.32 -13 55 20.5 19.6 GVER016595
K07R08Z KC2018 09 04.91493 22 36 42.43 -13 54 38.1 19.6 GVER016595
K07R08Z KC2018 09 04.92123 22 36 41.59 -13 53 56.0 19.4 GVER016595
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore,
P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
587 Sormano. Observers A. Fumagalli, I. Proserpio, P. Sicoli, A. Testa,
E. Valli. Measurer P. Sicoli. 0.5-m f/6.8 reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey. Observer G. J. Leonard. Measurers B. M. Africano,
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
R. L. Seaman, F. C. Shelly. 0.68-m Schmidt + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers H. Groeller,
R. A. Kowalski. Measurers B. M. Africano, E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller,
J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman,
F. C. Shelly. 1.0-m reflector + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.2 Newtonian reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
180904 703 5.40+ 3.20+ 180904 595 5.41+ 3.22+ MPO128923 -0.60 day
Orbital elements:
2007 RZ8 Earth MOID = 0.0935 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 249.68527 (2000.0) P Q
n 0.62664074 Peri. 7.08067 +0.98676627 +0.15431965
a 1.3524575 Node 343.78452 -0.15613688 +0.82148030
e 0.1861598 Incl. 10.26802 -0.04374474 +0.54895862
P 1.57 H 23.9 G 0.15 U 2
Residuals in seconds of arc
070909 691 0.1- 0.2- 070912 291 0.1- 0.1- 071030 H55 0.0 1.5+
070909 691 0.1- 0.1+ 070912 291 0.1- 0.2+ 180904 703 0.2- 0.1+
070909 691 0.7- 0.2+ 070915 H55 0.1+ 0.4- 180904 703 0.1+ 0.4+
070909 291 0.0 0.3+ 070915 H55 0.1+ 0.2- 180904 703 0.5+ 0.4-
070909 291 0.0 0.1- 070915 H55 0.2+ 0.2- 180904 703 0.5+ 0.8-
070909 291 0.1- 0.3+ 070924 H55 0.2- 0.1- 180904 I52 0.6+ 0.1+
070910 291 0.3- 0.5+ 070924 H55 0.6+ 0.2+ 180904 I52 0.1+ 0.4-
070910 291 0.1- 0.2+ 071002 H55 0.1+ 0.3- 180904 I52 0.5+ 0.1-
070910 291 0.0 0.3- 071002 H55 0.8+ 0.1- 180904 I52 0.1+ 0.4-
070910 673 0.3+ 1.0+ 071002 H55 0.1+ 0.0 180904 474 0.5+ 0.2-
070910 673 0.2- 0.8+ 071003 J95 0.8+ 0.5- 180904 474 0.2+ 0.1-
070910 673 0.2- 0.2+ 071003 J95 0.1- 0.2- 180904 474 0.2+ 0.6-
070910 673 0.4+ 0.4+ 071003 J95 0.8- 0.1+ 180904 474 0.3+ 0.1-
070910 854 0.1+ 1.3- 071004 291 0.9+ 0.1- 180904 587 0.3+ 0.6-
070910 854 0.3- 0.3+ 071004 291 0.5+ 0.7- 180904 K63 0.2- 0.3-
070910 854 0.1- 0.0 071004 291 (1.9+ 3.1-) 180904 587 0.3+ 0.6-
070911 291 0.1- 0.5+ 071006 291 (2.8- 0.4-) 180904 587 0.5+ 0.4-
070911 291 0.0 0.4+ 071006 291 0.6- 0.1+ 180904 K63 0.4+ 0.2+
070911 291 0.1+ 0.0 071017 H55 0.7- 1.0+ 180904 K63 0.4+ 0.1+
070912 H55 0.3+ 0.0 071017 H55 0.3- 0.9+ 180904 595 0.6- 0.2-
070912 H55 0.4+ 0.3- 071017 H55 0.0 0.7+ 180904 595 1.0- 0.0
070912 H55 0.3+ 0.0 071030 H55 (0.4- 1.9+) 180904 595 0.6- 0.2-
070912 291 0.0 0.4- 071030 H55 (0.1- 1.6+)
Ephemeris:
2007 RZ8 a,e,i = 1.35, 0.19, 10 q = 1.1007
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 08 06 23 18 01.3 -48 14 12 0.1560 1.1355 138.2 36.5 21.6
...
2018 08 21 23 03 34.8 -36 55 14 0.1156 1.1146 151.5 25.7 20.6
...
2018 08 29 22 49 38.4 -26 00 44 0.1013 1.1072 162.8 15.6 20.0
...
2018 09 04 22 38 22.9 -15 35 26 0.09577 1.1034 171.3 8.0 19.6
2018 09 05 22 36 32.3 -13 43 53 0.09536 1.1029 172.0 7.3 19.5
2018 09 06 22 34 43.2 -11 51 13 0.09511 1.1025 172.3 7.0 19.5
...
2018 09 12 22 24 41.9 -00 36 41 0.09687 1.1008 165.8 12.9 19.8
...
2018 09 20 22 15 01.6 +12 34 36 0.1073 1.1011 153.1 24.4 20.4
...
2018 10 05 22 10 49.8 +28 14 14 0.1435 1.1094 137.0 38.0 21.4
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-R16
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