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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2202013551996744 3.7163e-08  
a 2.217904058782479 7.3126e-09 au
q 1.729518579335719 8.1471e-08 au
i 5.353225412862184 3.2954e-06 deg
node 290.4947198571953 4.7694e-05 deg
peri 36.03101143042783 4.8531e-05 deg
M 83.71345902466939 8.435e-06 deg
tp 2458319.953182226163
(2018-Jul-20.45318223)
2.8351e-05 TDB
period 1206.45898013626
3.30
5.9667e-06
1.634e-08
d
yr
n .2983938997738165 1.4758e-09 deg/d
Q 2.706289538229239 8.9229e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1530  
   data-arc span      7517 days (20.58 yr)  
   first obs. used      1998-06-24  
   last obs. used      2019-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:26  

Additional Information
 Earth MOID = .72008 au 
 Jupiter MOID = 2.63402 au 
 T_jup = 3.614 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456900.5 (2014-Aug-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221225104314505 3.7265e-08  
q 1.726756154714461 8.1767e-08 au
tp 2457113.566000993447
(2015-Apr-01.06600099)
2.916e-05 TDB
node 290.5969061141632 4.7681e-05 deg
peri 35.91804466617086 4.8503e-05 deg
i 5.355106957102376 3.2974e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1530  
   data-arc span      7517 days (20.58 yr)  
   first obs. used      1998-06-24  
   last obs. used      2019-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:26  

Additional Information
 Jupiter MOID = 2.63402 au 
 T_jup = 3.614 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.388693141260378E-15 -3.039953953400686E-15 3.458571111337406E-13 2.046304662665483E-14 7.353269580441802E-14 -2.587075573752057E-15
q -3.039953953400686E-15 6.685804111601404E-15 -8.147756465928991E-13 -4.452117285376542E-14 -1.810899287865906E-13 5.807923104087598E-15
tp 3.458571111337406E-13 -8.147756465928991E-13 8.502837140229176E-10 8.888982594402795E-12 2.777042249985959E-10 -1.474416199237591E-12
node 2.046304662665483E-14 -4.452117285376542E-14 8.888982594402795E-12 2.273444114582918E-9 -2.260670435308164E-9 2.639011659657069E-11
peri 7.353269580441802E-14 -1.810899287865906E-13 2.777042249985959E-10 -2.260670435308164E-9 2.352502013708739E-9 -2.677121481401249E-11
i -2.587075573752057E-15 5.807923104087598E-15 -1.474416199237591E-12 2.639011659657069E-11 -2.677121481401249E-11 1.087274293001564E-11

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-January); 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

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