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831 Stateira (A916 SD)
Classification: Main-belt Asteroid          SPK-ID: 2000831
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1464195502669327 3.6018e-08  
a 2.211778712262815 5.1504e-09 au
q 1.887931067923318 8.0131e-08 au
i 4.836715279832405 3.6527e-06 deg
node 178.0642510187078 3.8187e-05 deg
peri 225.0902424881011 3.9396e-05 deg
M 150.4383115092355 1.0042e-05 deg
tp 2458498.426976659368
(2019-Jan-14.92697666)
3.2994e-05 TDB
period 1201.464484607243
3.29
4.1967e-06
1.149e-08
d
yr
n .2996343251192178 1.0466e-09 deg/d
Q 2.535626356602312 5.9046e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2803  
   data-arc span      37938 days (103.87 yr)  
   first obs. used      1916-09-20  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41664  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:23:02  

Additional Information
 Earth MOID = .899769 au 
 Jupiter MOID = 2.85188 au 
 T_jup = 3.638 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO416712  
diameter diameter 7.218 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 861. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Polakis, T. (2019) Minor Planet Bull. 46, 78-80.]
geometric albedo albedo 0.257   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

831 Stateira (A916 SD)          Discovered 1916-Sep-20 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 SD = 1926 VA = 1949 SQ = 1949 UO1 = 1971 KZ = 1972 RV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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