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277295 (2005 SR123)
Classification: Main-belt Asteroid          SPK-ID: 2277295
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06651509908084469 4.8354e-08  
a 2.34801226098613 1.5953e-08 au
q 2.191833992803599 1.1382e-07 au
i 6.126330105580812 5.1634e-06 deg
node 219.8272560129879 4.6855e-05 deg
peri 254.0229847763451 6.3819e-05 deg
M 287.669329681449 4.5633e-05 deg
tp 2459264.539533401567
(2021-Feb-19.03953340)
0.00016764 TDB
period 1314.162188818886
3.60
1.3393e-05
3.667e-08
d
yr
n .2739387900998376 2.7918e-09 deg/d
Q 2.50419052916866 1.7014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      7616 days (20.85 yr)  
   first obs. used      1998-10-27  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53685  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:46:46  

Additional Information
 Earth MOID = 1.2177 au 
 Jupiter MOID = 2.56834 au 
 T_jup = 3.549 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO440344  
rotation period rot_per 7.97 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

277295 (2005 SR123)          Discovered 2005-Sep-29 by LONEOS at Anderson Mesa
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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