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48902 (1998 MP31)
Classification: Main-belt Asteroid          SPK-ID: 2048902
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204620898035929 3.6971e-08  
a 2.217591115357473 6.8525e-09 au
q 1.728696343735884 8.0805e-08 au
i 5.353712495358686 3.2586e-06 deg
node 290.4953060538567 4.1053e-05 deg
peri 36.04538365631697 4.1601e-05 deg
M 203.04528410004 7.4028e-06 deg
tp 2459526.387084241107
(2021-Nov-07.88708424)
2.5513e-05 TDB
period 1206.203644415928
3.30
5.5909e-06
1.531e-08
d
yr
n .2984570654106426 1.3834e-09 deg/d
Q 2.706485886979062 8.3632e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1755  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45121  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:49:54  

Additional Information
 Earth MOID = .720152 au 
 Jupiter MOID = 2.63681 au 
 T_jup = 3.614 
[ 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 14.6   n/a MPO359068  
diameter diameter 3.159 km 0.926 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.44 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.405   0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48902 (1998 MP31)          Discovered 1998-Jun-24 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 MP31 = 2000 AJ50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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