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72302 (2001 BD31)
Classification: Main-belt Asteroid          SPK-ID: 2072302
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199492287374414 2.987e-08  
a 2.313626032501292 8.4186e-09 au
q 2.036108374315896 6.9841e-08 au
i 2.056842383005911 3.9523e-06 deg
node 304.1098094759199 0.00010069 deg
peri 151.6617730641219 0.00010243 deg
M 265.2571873658886 2.015e-05 deg
tp 2459538.784378370908
(2021-Nov-20.28437837)
7.2925e-05 TDB
period 1285.399629034023
3.52
7.0158e-06
1.921e-08
d
yr
n .2800685420070797 1.5286e-09 deg/d
Q 2.591143690686688 9.4284e-09 au
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      9746 days (26.68 yr)  
   first obs. used      1994-02-10  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53056  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:01:18  

Additional Information
 Earth MOID = 1.05297 au 
 Jupiter MOID = 2.54712 au 
 T_jup = 3.572 
[ 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 16.61   n/a E2021B10  
rotation period rot_per 2.45 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

72302 (2001 BD31)          Discovered 2001-Jan-20 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 BD31 = 1994 CB4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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