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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6576229052196295 1.6536e-07  
a 1.621094052121431 7.841e-09 AU
q .5550254719310741 2.6816e-07 AU
i 24.39091449623995 1.4012e-05 deg
node 77.75035813281158 3.1089e-05 deg
peri 77.72708532905982 3.1283e-05 deg
M 6.246659756123723 1.847e-05 deg
tp 2456987.418543662283
(2014-Nov-25.91854366)
3.8594e-05 JED
period 753.8947958485031
2.06
5.4698e-06
1.498e-08
d
yr
n .4775202083665037 3.4646e-09 deg/d
Q 2.687162632311788 1.2997e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      187  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      14854 days (40.67 yr)  
   first obs. used      1974-07-21  
   last obs. used      2015-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .75446  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:20:03  

Additional Information
 Earth MOID = .0270327 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. 2015-May); 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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