• Processing (Info)

    • MPEC 1999-Y13 : 1999 XN141

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    M.P.E.C. 1999-Y13                                Issued 1999 Dec. 20, 20:43 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 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

             BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                  1999 XN141

Observations:
     J99XE1N* C1999 12 14.22579 06 03 39.45 +15 29 33.1          18.2        704
     J99XE1N  C1999 12 14.25475 06 03 43.52 +15 32 40.9          18.3        704
     J99XE1N  C1999 12 14.26946 06 03 45.57 +15 34 14.7          18.5        704
     J99XE1N  C1999 12 14.28390 06 03 47.54 +15 35 49.1          18.4        704
     J99XE1N  C1999 12 16.31562 06 08 51.98 +18 50 28.0          19.5        704
     J99XE1N  C1999 12 16.33073 06 08 53.60 +18 51 46.4          19.2        704
     J99XE1N  C1999 12 16.34549 06 08 55.19 +18 53 00.9          19.2        704
     J99XE1N  C1999 12 18.20643 06 12 48.71 +21 17 52.4          18.7        704
     J99XE1N  C1999 12 18.22127 06 12 50.09 +21 18 57.8          19.5        704
     J99XE1N  C1999 12 18.23593 06 12 51.39 +21 19 59.3          19.0        704
     J99XE1N  C1999 12 18.25058 06 12 52.74 +21 21 02.7          19.0        704
     J99XE1N  C1999 12 18.28437 06 12 56.06 +21 23 29.0                      651
     J99XE1N  C1999 12 18.29360 06 12 56.83 +21 24 07.7          19.5 V      651

Observer details:
651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  Measurer
    J. E. Rogers.  0.62-m f/5.1 reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, M. Elowitz, R. Huber.  Measurers J. Stuart, H. Viggh,
    R. Sayer, J. B. Evans.  1.0-m f/2.15 reflector + CCD.

Orbital elements:
1999 XN141
Epoch 1999 Dec. 8.0 TT = JDT 2451520.5                  Williams
M   7.64109              (2000.0)            P               Q
n   0.24364094     Peri.  307.99180     +0.79695683     -0.59018747
a   2.5388431      Node    88.54225     +0.58665869     +0.70558170
e   0.6219783      Incl.    7.39124     +0.14384504     +0.39221577
P   4.05           H   23.1           G   0.15
From 13 observations 1999 Dec. 14-18.

Ephemeris:
1999 XN141               a,e,i = 2.54, 0.62, 7                   q = 0.9597
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1999 12 18    06 12.38   +21 03.4    0.128    1.111   172.4     6.8    19.4
1999 12 23    06 20.10   +25 50.0    0.162    1.145   175.4     3.9    19.8
1999 12 28    06 25.17   +28 52.3    0.199    1.181   174.4     4.6    20.4
2000 01 02    06 28.77   +30 51.6    0.238    1.219   171.1     7.2    20.9
2000 01 07    06 31.65   +32 09.9    0.280    1.258   167.2    10.0    21.5
2000 01 12    06 34.32   +33 00.1    0.325    1.298   163.2    12.7    22.0
2000 01 17    06 37.11   +33 30.4    0.373    1.339   159.1    15.2    22.4

Gareth V. Williams           (C) Copyright 1999 MPC           M.P.E.C. 1999-Y13

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