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4953 (1990 MU)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004953
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6575986235350605 1.6519e-07  
a 1.621187796175771 7.7837e-09 au
q .5550969329187457 2.6788e-07 au
i 24.38827980669164 1.3202e-05 deg
node 77.72743122102209 3.0856e-05 deg
peri 77.7613534779284 3.1095e-05 deg
M 292.6958056420844 2.0301e-05 deg
tp 2457741.457453376354
(2016-Dec-18.95745338)
4.3453e-05 JED
period 753.9601907369012
2.06
5.4299e-06
1.487e-08
d
yr
n .4774787905554341 3.4387e-09 deg/d
Q 2.687278659432796 1.2902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      15032 days (41.16 yr)  
   first obs. used      1974-07-21  
   last obs. used      2015-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .75122  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:25:39  

Additional Information
 Earth MOID = .0260196 au 
 Jupiter MOID = 2.73461 au 
 T_jup = 3.976 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a PDS3 (MPC 28112)  
rotation period rot_per 14.218 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; et al. (1995) Icarus 117, 62-70; Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; Harris, A.W.; Hahn, G.; Neukum, G.; Pravec, M.; Wolf, M. (1995) Lunar & Planetary Science XXVI, 1003-1004.]

4953 (1990 MU)          Discovered 1990-Jun-23 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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