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150789 (2001 RM31)
Classification: Main-belt Asteroid          SPK-ID: 2150789
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09050937913846736 2.9946e-08  
a 2.330185841282592 1.1214e-08 au
q 2.119282167510857 6.8943e-08 au
i 7.288811961748051 4.2926e-06 deg
node 153.0586372815798 2.6608e-05 deg
peri 101.1128807681631 3.6984e-05 deg
M 231.9537669398463 2.6689e-05 deg
tp 2459662.613409923872
(2022-Mar-24.11340992)
9.7763e-05 TDB
period 1299.22469093207
3.56
9.3786e-06
2.568e-08
d
yr
n .2770883300730178 2.0002e-09 deg/d
Q 2.541089515054327 1.2229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      615  
   data-arc span      10169 days (27.84 yr)  
   first obs. used      1993-03-17  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57325  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:40:09  

Additional Information
 Earth MOID = 1.11754 au 
 Jupiter MOID = 2.50304 au 
 T_jup = 3.555 
[ 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 16.2   n/a MPO436761  
rotation period rot_per 5.242 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.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

150789 (2001 RM31)          Discovered 2001-Sep-07 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

[ show close-approach data ]
Alternate Designations
 2001 RM31 = 1993 FM18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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