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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 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6576229990891506 1.8318e-07  
a 1.62109401857816 3.2994e-08 AU
q .5550253082753074 2.9814e-07 AU
i 24.39091107554353 1.4098e-05 deg
node 77.75035875676647 3.3776e-05 deg
peri 77.72706499314049 3.5039e-05 deg
M 6.246740745325359 7.5713e-05 deg
tp 2456987.418374464590
(2014-Nov-25.91837446)
0.00015816 JED
period 753.8947724494008
2.06
2.3016e-05
6.301e-08
d
yr
n .4775202231875963 1.4578e-08 deg/d
Q 2.687162728881013 5.4691e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      163  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      14300 days (39.15 yr)  
   first obs. used      1974-07-21  
   last obs. used      2013-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .76519  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:07:17  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (413)
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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