[Iaude] MPEC B86: 2018 NB4 [a=2.09,e=0.46,i=13.8,H=19.5]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Fri Jan 25 19:29:16 EST 2019


M.P.E.C. 2019-B86                                Issued 2019 Jan. 26, 00:26 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2018 NB4
 
                           Revision to MPEC 2018-N85
 
Additional Observations:
     K18N04B  C2015 08 21.37137720 50 27.107-32 16 16.46         22.2 GVEB086F51
     K18N04B  C2015 08 21.38134220 50 26.299-32 16 12.65         22.6 GVEB086F51
     K18N04B  C2015 08 21.39126920 50 25.488-32 16 08.63         22.1 GVEB086F51
     K18N04B  C2015 08 21.40118420 50 24.699-32 16 05.02         22.1 GVEB086F51
     K18N04B  C2017 11 21.63025311 56 43.723+08 34 21.29         22.2 GVEB086F51
     K18N04B  C2017 11 21.63411611 56 44.411+08 34 14.64         22.4 GVEB086F51
     K18N04B  C2017 11 21.63796711 56 45.133+08 34 08.43         22.3 GVEB086F51
     K18N04B  C2017 12 23.63969313 43 36.420-07 55 39.53         21.4 GVEB086F51
     K18N04B  C2017 12 23.64879413 43 38.347-07 55 57.96         22.1 GVEB086F51
     K18N04B  C2017 12 23.65334313 43 39.274-07 56 06.90         22.2 GVEB086F51
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
150821 F51 0.05- 0.02-    171223 F51  0.0+  0.1+    MPO452021   +0.00088 day
 
Orbital elements:
2018 NB4                                                 Earth MOID = 0.1549 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M 147.64676              (2000.0)            P               Q
n   0.32652777     Peri.  204.03099     -0.96817405     +0.24682694
a   2.0886033      Node   349.98867     -0.17307568     -0.77983357
e   0.4570413      Incl.   13.78331     -0.18078666     -0.57527042
P   3.02           H   19.5           G   0.15           U   1
Residuals in seconds of arc
150821 F51  0.0   0.3-    180710 F51  0.1+  0.1-    180714 807  0.2-  0.2+
150821 F51  0.0   0.1-    180710 F51  0.2-  0.1-    180714 807  0.0   0.1+
150821 F51  0.1-  0.2+    180712 J04  0.1+  0.1+    180714 474  0.3+  0.2+
150821 F51  0.1+  0.1+    180712 807  0.1-  0.1-    180714 474  0.1-  0.0
171121 F51  0.4+  0.1+    180712 807  0.0   0.2-    180714 474  0.4-  0.1+
171121 F51  0.2-  0.1-    180712 807  0.1-  0.0     180905 807  0.1+  0.1-
171121 F51  0.2-  0.0     180712 474  0.1+  0.2+    180905 807  0.2+  0.1-
171223 F51  0.1+  0.2+    180712 474  0.2-  0.1+    180905 807  0.2-  0.6-
171223 F51  0.2+  0.2-    180712 474  0.3-  0.1-    180906 807  0.2+  0.0
171223 F51  0.3-  0.1-    180712 474  0.4+  0.1-    180906 807  0.7+  0.1+
180710 F51  0.0   0.0     180714 807  0.1-  0.1+    180906 807  0.2+  0.2+

Ephemeris:
2018 NB4                 a,e,i = 2.09, 0.46, 14                  q = 1.1340
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 12 27    21 52 06.7 -14 46 10   3.2039  2.6841    50.3    16.4    25.1
...
2019 01 11    22 12 10.0 -12 22 07   3.4058  2.7319    40.4    13.5    25.1
...
2019 01 19    22 22 56.8 -11 03 42   3.5016  2.7560    35.2    11.9    25.1
...
2019 01 25    22 31 02.3 -10 04 18   3.5674  2.7734    31.3    10.6    25.1
2019 01 26    22 32 23.2 -09 54 21   3.5779  2.7763    30.6    10.4    25.1
2019 01 27    22 33 44.2 -09 44 24   3.5882  2.7791    30.0    10.2    25.1
...
2019 02 02    22 41 49.4 -08 44 23   3.6469  2.7958    26.1     8.9    25.1
...
2019 02 10    22 52 34.9 -07 23 49   3.7164  2.8171    21.0     7.2    25.1
...
2019 02 25    23 12 35.4 -04 51 42   3.8180  2.8545    11.4     3.9    25.0

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-B86



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