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83991 (2002 MS1)
Classification: Main-belt Asteroid          SPK-ID: 2083991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2097669922768943 8.0122e-08  
a 2.744353973773031 1.6599e-08 au
q 2.16867909495152 2.2116e-07 au
i 34.21201937252277 6.2755e-06 deg
node 278.4814452546933 1.238e-05 deg
peri 61.15367642140762 2.0234e-05 deg
M 28.69623398665586 1.2501e-05 deg
tp 2459068.132605129578
(2020-Aug-06.63260513)
5.7731e-05 TDB
period 1660.575466993715
4.55
1.5066e-05
4.125e-08
d
yr
n .2167923151675482 1.9669e-09 deg/d
Q 3.320028852594543 2.0081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1023  
   data-arc span      10003 days (27.39 yr)  
   first obs. used      1993-10-13  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41022  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:05:42  

Additional Information
 Earth MOID = 1.27817 au 
 Jupiter MOID = 2.22258 au 
 T_jup = 3.070 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.09   n/a E2021B10  
diameter diameter 9.225 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.24500 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.064   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

83991 (2002 MS1)          Discovered 2002-Jun-20 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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