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213012 (1995 SA12)
Classification: Main-belt Asteroid          SPK-ID: 2213012
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949232490510982 5.0162e-08  
a 2.384687702028912 9.9446e-09 au
q 1.919856627177239 1.2279e-07 au
i .61191245130547 5.4603e-06 deg
node 212.1428722553988 0.00047696 deg
peri 95.9529438715887 0.00047717 deg
M 339.0333218525952 1.3703e-05 deg
tp 2459278.838061876196
(2021-Mar-05.33806188)
5.1362e-05 TDB
period 1345.072503958916
3.68
8.4138e-06
2.304e-08
d
yr
n .2676435648936557 1.6742e-09 deg/d
Q 2.849518776880585 1.1883e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      9008 days (24.66 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:40:59  

Additional Information
 Earth MOID = .903239 au 
 Jupiter MOID = 2.40552 au 
 T_jup = 3.510 
[ 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 17.30   n/a MPCxxxxx  

213012 (1995 SA12)          Discovered 1995-Sep-18 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 1995 SA12 = 1999 UL57 = 1999 WZ22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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