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3131 Mason-Dixon (1982 BM1)
Classification: Main-belt Asteroid          SPK-ID: 2003131
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04373800220808692 3.4297e-08  
a 2.922318467440276 1.295e-08 au
q 2.79450209585864 9.7303e-08 au
i 2.403980836286365 3.297e-06 deg
node 44.73305189523214 8.8852e-05 deg
peri 146.8693405425554 9.7619e-05 deg
M 197.4248348884395 4.1505e-05 deg
tp 2459824.527003280667
(2022-Sep-02.02700328)
0.00021143 TDB
period 1824.692725838393
5.00
1.2129e-05
3.321e-08
d
yr
n .197293492160216 1.3114e-09 deg/d
Q 3.050134839021911 1.3516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      24109 days (66.01 yr)  
   first obs. used      1954-07-29  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:00:09  

Additional Information
 Earth MOID = 1.7939 au 
 Jupiter MOID = 1.9046 au 
 T_jup = 3.277 
[ 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 12.0   n/a MPO448944  
rotation period rot_per 19.748 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]

3131 Mason-Dixon (1982 BM1)          Discovered 1982-Jan-24 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1982 BM1 = 1962 CK = 1975 XS2 = 1977 DB3 = 1979 OS16 = 1979 QJ6 = A922 DC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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