[Iaude] MPEC Q148: 2020 HW9 [a=1.95,e=0.83,i=22.1,H=19.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Aug 21 11:08:28 EDT 2020


M.P.E.C. 2020-Q148                              Issued 2020 August 21, 15:07 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

                                    2020 HW9                                    


                           Revision to MPEC 2020-J06                            

Additional Observations:
     K20H09W  C2011 06 26.52273819 58 47.249-04 22 31.60         21.77GVEQ148F51
     K20H09W  C2011 06 26.53218819 58 46.531-04 22 32.31         22.45GVEQ148F51
     K20H09W  C2012 05 09.57323016 26 51.273+18 41 50.32         21.25GVEQ148F51
     K20H09W  C2012 05 16.53824316 11 22.658+18 47 51.65         21.70GVEQ148F51
     K20H09W  C2012 05 16.53887516 11 22.585+18 47 51.24         21.25GVEQ148F51
     K20H09W  C2012 05 16.55935916 11 19.898+18 47 49.54         21.33GVEQ148F51
     K20H09W  C2012 05 16.56906016 11 18.618+18 47 49.18         21.40GVEQ148F51
     K20H09W  C2012 05 16.56966716 11 18.550+18 47 49.28         21.56GVEQ148F51
     K20H09W  C2014 06 14.54707322 29 48.116-01 44 43.52         21.50GVEQ148F51
     K20H09W  C2014 06 14.55876222 29 49.136-01 44 39.63         22.05GVEQ148F51
     K20H09W  C2014 06 14.57041722 29 50.087-01 44 35.72         22.43GVEQ148F51
     K20H09W  C2014 06 14.58204722 29 51.069-01 44 31.90         21.46GVEQ148F51
     K20H09W  C2014 06 24.52958 22 45 03.670-00 52 41.39         21.3 wLEQ148F51
     K20H09W  C2014 06 24.54198 22 45 04.852-00 52 37.99         21.3 wLEQ148F51
     K20H09W  C2014 06 24.55365 22 45 05.959-00 52 34.56         21.3 wLEQ148F51
     K20H09W  C2014 06 24.56531 22 45 07.064-00 52 31.05         21.3 wLEQ148F51
     K20H09W  C2014 07 02.60778422 59 20.440-00 16 56.93         21.56GVEQ148F51
     K20H09W  C2014 07 02.61144822 59 20.836-00 16 55.90         22.06GVEQ148F51
     K20H09W  C2014 07 10.58321 23 16 47.674+00 09 37.26         20.2 iLEQ148F51
     K20H09W  C2014 07 10.59009 23 16 48.677+00 09 38.23         20.1 iLEQ148F51
     K20H09W  C2014 07 10.59697 23 16 49.673+00 09 39.37         20.2 iLEQ148F51
     K20H09W  C2014 07 10.60387 23 16 50.680+00 09 40.39         20.0 iLEQ148F51
     K20H09W  C2014 07 29.56138000 43 49.802-00 06 48.14         18.69GVEQ148F51
     K20H09W  C2014 07 29.57371300 43 56.205-00 06 53.33         18.73GVEQ148F51
     K20H09W  C2014 07 29.58609800 44 02.643-00 06 58.52         18.83GVEQ148F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, M. Willman, N. Primak, T. Goggia.  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
110626 F51 0.03- 0.00-    140729 F51 0.28- 0.05-    MPO554970   +0.00 days

Orbital elements:
2020 HW9                                                 Earth MOID = 0.0655 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M  32.28497              (2000.0)            P               Q
n   0.36244188     Peri.  309.34882     +0.03414169     -0.96536124
a   1.9482460      Node   136.45778     +0.99289535     +0.00324311
e   0.8308450      Incl.   22.05484     +0.11398758     +0.26089683
P   2.72           H   19.1           G   0.15           U   1
Residuals in seconds of arc
110626 F51  0.1+  0.2-    200429 I52  0.3+  0.2-    200504 I52  0.2+  0.1+
110626 F51  0.4+  0.3+    200429 I52  0.2+  0.2+    200504 H21  0.4+  0.1+
120509 F51  0.8-  0.1-    200429 I52  0.1-  0.4+    200504 I52  0.6+  0.1+
120516 F51  0.5-  0.2+    200429 K63  0.8+  0.8-    200504 H21  0.2+  0.1+
120516 F51  0.4-  0.1-    200429 K63  0.1+  0.1+    200504 F52  0.1+  0.0
120516 F51  0.1-  0.5-    200429 K63  0.0   0.4-    200504 F52  0.0   0.1+
120516 F51  0.1-  0.2-    200429 203  0.1+  0.0     200504 F52  0.0   0.0
120516 F51  0.1+  0.0     200429 203  0.3+  0.2+    200506 I52  0.3-  0.4-
140614 F51  0.1-  0.0     200429 203  0.3+  0.1+    200506 I52  0.9-  0.5-
140614 F51  0.5+  0.0     200430 L01  0.3+  0.2+    200506 I52  0.3+  0.2+
140614 F51  0.0   0.1+    200430 L01  0.4+  0.1-    200506 G96  0.1-  0.0
140614 F51  0.1+  0.0     200430 L01  0.1+  0.2-    200506 G96  0.3+  0.1-
140624 F51  0.1-  0.2+    200430 L01  0.2+  0.3-    200506 G96  0.1+  0.3+
140624 F51  0.0   0.0     200430 I52  0.3+  0.6+    200506 G96  0.1+  0.4-
140624 F51  0.1-  0.0     200430 I52  0.2-  0.4+    200512 I52  0.1+  0.1+
140624 F51  0.1-  0.2+    200430 I52  0.3-  0.2+    200512 I52  0.0   0.4+
140702 F51  0.0   0.2-    200430 I52  0.2-  0.1+    200512 I52  0.0   0.1+
140702 F51  0.2-  0.1-    200430 858  0.1+  0.0     200512 I52  0.0   0.1-
140710 F51  0.1-  0.2+    200430 858  0.2+  0.0     200515 G96  0.3+  0.3-
140710 F51  0.1-  0.1+    200430 858  0.1+  0.1+    200515 G96  0.4+  0.2-
140710 F51  0.2-  0.2+    200501 204  0.0   0.5+    200515 G96  0.3+  0.0
140710 F51  0.1-  0.1+    200501 204  0.2+  0.3+    200515 G96  0.1+  0.1-
140729 F51  0.0   0.1-    200501 204  0.7+  0.4+    200516 I52  0.5+  0.1+
140729 F51  0.1+  0.1-    200501 G96  1.4-  0.4-    200516 I52  0.0   0.9-
140729 F51  0.2+  0.1-    200501 G96  0.0   0.1+    200516 I52  0.4+  1.0+
200428 703  0.1+  0.5+    200501 G96  1.0-  0.3-    200518 I52  0.2-  0.3+
200428 703  0.3-  0.4-    200501 H21  0.1-  0.2+    200518 I52  0.2-  0.7-
200428 703  0.3-  0.2+    200501 H21  0.0   0.2+    200518 I52  0.3-  0.1-
200428 703  1.1+  1.3+    200501 H21  0.0   0.2+    200523 I52  0.4+  0.2+
200428 I52  0.1-  0.2+    200501 H36  0.0   0.2-    200523 I52  0.2+  0.3+
200428 I52  0.1+  0.2+    200501 H36  0.1+  0.3-    200523 I52  0.2+  0.0
200428 I52  0.1-  0.2+    200501 H36  0.4+  0.0     200523 I52  0.3+  0.1-
200428 F65  0.4+  0.1+    200504 H21  0.2+  0.0     200609 V06  0.1-  0.4-
200428 F65  0.1+  0.2+    200504 I52  0.1+  0.1-    200609 V06  0.8-  0.3-
200428 F65  0.0   0.5+    200504 I52  0.1-  0.3+    200609 V06  0.2+  0.4-

Ephemeris:
2020 HW9                 a,e,i = 1.95, 0.83, 22                  q = 0.3296
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 07 22    14 15 00.8 +12 11 52   1.9677  2.1802    87.8    27.8    23.5
...
2020 08 06    14 29 13.8 +08 24 34   2.2764  2.3111    79.1    25.5    23.9
...
2020 08 14    14 37 24.2 +06 36 38   2.4393  2.3771    74.4    24.2    24.0
...
2020 08 20    14 43 45.9 +05 20 57   2.5599  2.4250    70.9    23.2    24.2
2020 08 21    14 44 50.6 +05 08 45   2.5798  2.4328    70.3    23.0    24.2
2020 08 22    14 45 55.5 +04 56 40   2.5996  2.4406    69.7    22.9    24.2
...
2020 08 28    14 52 31.2 +03 46 32   2.7176  2.4867    66.1    21.8    24.3
...
2020 09 05    15 01 32.6 +02 19 08   2.8708  2.5460    61.3    20.3    24.4
...
2020 09 20    15 19 04.7 -00 07 26   3.1431  2.6514    52.3    17.4    24.6

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-Q148




More information about the Iaude mailing list