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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0435497124149137 1.2367e-08  
a 2.92303517906177 1.0853e-08 au
q 2.795737837634954 4.0015e-08 au
i 2.40372323061129 3.5953e-07 deg
node 44.73293207011336 3.5356e-06 deg
peri 146.6502096284418 2.7127e-05 deg
M 237.0989721946309 2.9216e-05 deg
tp 2459823.664212200068
(2022-Sep-01.16421220)
0.00014907 TDB
period 1825.364038023315
5.00
1.0166e-05
2.783e-08
d
yr
n .1972209337430815 1.0984e-09 deg/d
Q 3.050332520488586 1.1325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3333  
   data-arc span      24345 days (66.65 yr)  
   first obs. used      1954-07-29  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:46:06  

Additional Information
 Earth MOID = 1.79447 au 
 Jupiter MOID = 1.90333 au 
 T_jup = 3.276 
[ 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 12.09   n/a E2021B10  
rotation period rot_per 19.748 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:
[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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