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72938 (2002 BB21)
Classification: Inner Main-belt Asteroid          SPK-ID: 2072938
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05015114700608578 4.3007e-08  
a 1.938202667745494 6.0908e-09 au
q 1.840999580827802 8.5755e-08 au
i 21.98330011094361 4.0273e-06 deg
node 44.38843608898869 1.0831e-05 deg
peri 221.978906657042 5.8549e-05 deg
M 230.0487222306209 6.1744e-05 deg
tp 2459556.274863531298
(2021-Dec-07.77486353)
0.00016945 TDB
period 985.5920855088877
2.70
4.6458e-06
1.272e-08
d
yr
n .3652626733646327 1.7218e-09 deg/d
Q 2.035405754663186 6.3963e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      8728 days (23.90 yr)  
   first obs. used      1997-04-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:16:34  

Additional Information
 Earth MOID = .846925 au 
 Jupiter MOID = 2.9756 au 
 T_jup = 3.815 
[ 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 15.82   n/a MPCxxxxx  

72938 (2002 BB21)          Discovered 2002-Jan-25 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 BB21 = 1997 HG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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