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129816 (1999 NC23)
Classification: Main-belt Asteroid          SPK-ID: 2129816
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2288945817695186 3.9832e-08  
a 2.37726325016429 1.0362e-08 au
q 1.833120572761888 9.4361e-08 au
i 1.832279058953268 4.7737e-06 deg
node 237.8486748301463 0.00013951 deg
peri 99.25183751097637 0.00013997 deg
M 223.6242358935353 1.2984e-05 deg
tp 2459507.664723601615
(2021-Oct-20.16472360)
5.0459e-05 TDB
period 1338.795802119553
3.67
8.7533e-06
2.397e-08
d
yr
n .2688983633128036 1.7581e-09 deg/d
Q 2.921405927566692 1.2734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      7589 days (20.78 yr)  
   first obs. used      1999-07-14  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:47:37  

Additional Information
 Earth MOID = .824919 au 
 Jupiter MOID = 2.47323 au 
 T_jup = 3.504 
[ 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 16.3   n/a MPO417677  
rotation period rot_per 4.47 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.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

129816 (1999 NC23)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1999 NC23 = 2002 GA135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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