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277449 (2005 UM492)
Classification: Main-belt Asteroid          SPK-ID: 2277449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021670442348888 1.4063e-07  
a 2.541240292202391 3.5533e-08 au
q 2.281609282857468 3.6972e-07 au
i 8.27671194258556 1.0916e-05 deg
node 357.6240118099525 5.0152e-05 deg
peri 344.0793903706424 6.2744e-05 deg
M 263.7085209959433 3.9859e-05 deg
tp 2459396.278667844287
(2021-Jun-30.77866784)
0.00016329 TDB
period 1479.677349414694
4.05
3.1035e-05
8.497e-08
d
yr
n .243296283573174 5.1029e-09 deg/d
Q 2.800871301547314 3.9164e-08 au
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      6651 days (18.21 yr)  
   first obs. used      2001-11-12  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:11:55  

Additional Information
 Earth MOID = 1.2751 au 
 Jupiter MOID = 2.58256 au 
 T_jup = 3.423 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO423064  

277449 (2005 UM492)          Discovered 2005-Oct-25 by LONEOS at Anderson Mesa
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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