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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325929035447076 4.5901e-08  
a 2.284171729337277 1.1543e-08 au
q 1.981306767549712 1.061e-07 au
i 5.965217475562854 4.7885e-06 deg
node 194.3729347332297 4.7125e-05 deg
peri 161.9001410351272 5.0648e-05 deg
M 170.9459559311421 1.9284e-05 deg
tp 2457001.746747794765
(2014-Dec-10.24674780)
6.6139e-05 JED
period 1260.931676445798
3.45
9.5585e-06
2.617e-08
d
yr
n .2855031773130928 2.1642e-09 deg/d
Q 2.587036691124842 1.3074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1127  
   data-arc span      9348 days (25.59 yr)  
   first obs. used      1990-09-16  
   last obs. used      2016-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58825  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:56:50  

Additional Information
 Earth MOID = .977212 au 
 Jupiter MOID = 2.84789 au 
 T_jup = 3.584 
[ 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. 2016-February); 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. (2016) 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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