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277397 (2005 UN156)
Classification: Main-belt Asteroid          SPK-ID: 2277397
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398100182406589 4.756e-08  
a 2.522013422466916 2.1239e-08 au
q 2.16941067986863 1.2421e-07 au
i 2.33738531673027 8.1703e-06 deg
node 33.00401794255084 0.00013247 deg
peri 280.4767819511031 0.00013654 deg
M 298.4989045920143 3.3319e-05 deg
tp 2459250.419341368087
(2021-Feb-04.91934137)
0.00013592 TDB
period 1462.916429303611
4.01
1.8479e-05
5.059e-08
d
yr
n .2460837767550194 3.1085e-09 deg/d
Q 2.874616165065202 2.4208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      8186 days (22.41 yr)  
   first obs. used      1997-11-25  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59104  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:26:20  

Additional Information
 Earth MOID = 1.15694 au 
 Jupiter MOID = 2.38424 au 
 T_jup = 3.441 
[ 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 17.1   n/a MPO427523  

277397 (2005 UN156)          Discovered 2005-Oct-28 by Healy, D. at Junk Bond
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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