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5487 (1991 UM4)
Classification: Main-belt Asteroid          SPK-ID: 2005487
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1610262776555017 5.2855e-08  
a 2.412314163555593 1.3658e-08 au
q 2.023868193262591 1.2918e-07 au
i 2.307505187290193 6.7176e-06 deg
node 355.8714061570802 0.00011832 deg
peri 241.4496562363057 0.00012066 deg
M 317.2583526814377 2.558e-05 deg
tp 2457562.979278780530
(2016-Jun-23.47927878)
9.768e-05 JED
period 1368.513944374536
3.75
1.1622e-05
3.182e-08
d
yr
n .263059065988936 2.234e-09 deg/d
Q 2.800760133848595 1.5857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      22751 days (62.29 yr)  
   first obs. used      1953-09-06  
   last obs. used      2015-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56456  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:56:32  

Additional Information
 Earth MOID = 1.01241 au 
 Jupiter MOID = 2.20538 au 
 T_jup = 3.500 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO332870  

5487 (1991 UM4)          Discovered 1991-Oct-18 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 UM4 = 1983 RD8 = 1990 LC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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