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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607985635054603 5.1532e-08  
a 2.411623623414024 1.1631e-08 au
q 2.023838009053216 1.245e-07 au
i 2.307306521903775 6.4805e-06 deg
node 355.8684525093673 0.00010829 deg
peri 241.4920406487682 0.00011008 deg
M 9.84383202532706 1.9035e-05 deg
tp 2457563.095451700754
(2016-Jun-23.59545170)
7.2342e-05 JED
period 1367.926367809118
3.75
9.8958e-06
2.709e-08
d
yr
n .2631720598942608 1.9038e-09 deg/d
Q 2.799409237774832 1.3501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1338  
   data-arc span      22868 days (62.61 yr)  
   first obs. used      1953-09-06  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54358  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:52:17  

Additional Information
 Earth MOID = 1.01306 au 
 Jupiter MOID = 2.20763 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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