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30823 (1990 SY15)
Classification: Main-belt Asteroid          SPK-ID: 2030823
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328736969729261 5.6594e-08  
a 2.283292212915364 1.3387e-08 au
q 1.979902735315806 1.3377e-07 au
i 5.963659841697107 5.7503e-06 deg
node 194.3878716694163 4.8041e-05 deg
peri 161.7289530963604 5.215e-05 deg
M 114.005479663994 1.9505e-05 deg
tp 2457001.416386807102
(2014-Dec-09.91638681)
6.7775e-05 JED
period 1260.203467174378
3.45
1.1083e-05
3.034e-08
d
yr
n .2856681554822177 2.5124e-09 deg/d
Q 2.586681690514922 1.5166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      982  
   data-arc span      9223 days (25.25 yr)  
   first obs. used      1990-09-16  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59583  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:59  

Additional Information
 Earth MOID = .974909 au 
 Jupiter MOID = 2.84723 au 
 T_jup = 3.585 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO302246  
rotation period rot_per 2.028 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

30823 (1990 SY15)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 SY15 = 1997 TO8 = 1999 CR79 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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