[Iaude] MPEC D112: S/2021 N 1 [a=0.34,e=0.44,i=134.5,H=12.1]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-D112                            Issued 2024 February 23, 06:14 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets, routine data on comets and natural satellites,
         and occasional editorial announcements.  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

                                   S/2021 N 1                                   
                              Satellite of Neptune                              


Observations:
    SK21N010*5C2021 09 07.45001 23 33 34.149-04 19 20.31         26.5 rVED112568
    SK21N010 5C2021 09 07.48980 23 33 33.890-04 19 21.93         26.6 rVED112568
    SK21N010 5C2021 09 07.52961 23 33 33.668-04 19 23.51         26.8 rVED112568
    SK21N010 5C2021 09 08.45824 23 33 28.114-04 20 01.13         26.7 rVED112568
    SK21N010 5C2021 09 08.50087 23 33 27.866-04 20 02.84         26.6 rVED112568
    SK21N010  C2021 10 06.09365 23 30 44.708-04 38 09.62         26.6 rVED112304
    SK21N010  C2021 10 06.10324 23 30 44.654-04 38 09.79         26.7 rVED112304
    SK21N010  C2021 10 06.13223 23 30 44.428-04 38 11.08         26.7 rVED112304
    SK21N010 ^C2022 11 16.02415 23 36 28.290-04 11 34.49         26.8 rVED112309
    SK21N010 ^C2022 11 16.12292 23 36 28.057-04 11 35.74         26.9 rVED112309
    SK21N010 5C2023 11 03.20694 23 45 28.539-03 23 03.60         26.8 rVED112568
    SK21N010 5C2023 11 03.27194 23 45 28.281-03 23 05.05         26.8 rVED112568
    SK21N010  C2023 11 04.04097 23 45 25.308-03 23 23.46         26.8 rVED112304
    SK21N010  C2023 11 04.12639 23 45 24.975-03 23 25.46         27.0 rVED112304

Observer details:
304 Las Campanas Observatory.  Observer S. S. Sheppard.  6.5-m Magellan-Baade
    telescope + CCD.
309 Cerro Paranal.  Observers S. S. Sheppard, M. Brozovic, R. Jacobson.
    Measurer S. S. Sheppard.  8.2-m VLT telescope + CCD.
568 Maunakea.  Observers S. S. Sheppard, D. J. Tholen, C. Trujillo, P. S.
    Lykawka.  Measurer S. S. Sheppard.  8.2-m reflector + CCD, 8.1-m Gemini
    reflector + CCD.

Orbital elements:
    S/2021 N 1                                                                  
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M  86.36403              (2000.0)            P               Q                  
n   0.03593558     Peri.  100.79672     -0.66487729     +0.23231554             
a   0.3383978      Node   264.05033     -0.04251669     +0.93709278             
e   0.4408718      Incl.  134.45902     +0.74574160     +0.26055058             
P  27.43           H   12.1           P/d 10017.93                              
>From 14 observations 2021 Sep. 07-2023 Nov. 04, mean residual 0".21             

Residuals in seconds of arc
210907 568  0.2+  0.2-    211006 304  0.1+  0.1+    231103 568  0.1-  0.1+
210907 568  0.1-  0.2-    211006 304  0.1+  0.3+    231103 568  0.0   0.2+
210907 568  0.2+  0.2-    211006 304  0.8-  0.1+    231104 304  0.1+  0.2-
210908 568  0.1+  0.0     221116 309  0.1-  0.0     231104 304  0.1+  0.2-
210908 568  0.3+  0.0     221116 309  0.0   0.1+


M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-D112