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JPL Small-Body Database Browser
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20946 (2316 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2020946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03570954359077922 2.8884e-08  
a 2.211778956156973 7.2785e-09 au
q 2.132797339108917 6.4937e-08 au
i 2.82642136099599 4.1603e-06 deg
node 178.9547475196103 7.0319e-05 deg
peri 313.5179231379314 9.9561e-05 deg
M 186.8814334308076 7.1675e-05 deg
tp 2459178.266232674259
(2020-Nov-24.76623267)
0.00024035 TDB
period 1201.464683336557
3.29
5.9307e-06
1.624e-08
d
yr
n .2996342755579409 1.4791e-09 deg/d
Q 2.290760573205028 7.5384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      16862 days (46.17 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53211  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:47:44  

Additional Information
 Earth MOID = 1.14802 au 
 Jupiter MOID = 2.69888 au 
 T_jup = 3.654 
[ 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 15.5   n/a MPO431741  

20946 (2316 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2316 T-2 = 1998 FM28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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