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9527 (1981 EH23)
Classification: Main-belt Asteroid          SPK-ID: 2009527
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118988495656 4.3801e-08  
a 2.425924327989383 1.3456e-08 au
q 2.137267241626634 1.0476e-07 au
i 1.06078594340876 5.0622e-06 deg
node 273.7589253110871 0.00031486 deg
peri 164.6550893482791 0.00031616 deg
M 213.5705393627482 2.9801e-05 deg
tp 2458161.858448800396
(2018-Feb-12.35844880)
0.00011606 JED
period 1380.111902950839
3.78
1.1482e-05
3.144e-08
d
yr
n .2608484132556775 2.1702e-09 deg/d
Q 2.714581414352133 1.5057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      948  
   data-arc span      14024 days (38.40 yr)  
   first obs. used      1977-02-13  
   last obs. used      2015-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5815  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:28:10  

Additional Information
 Earth MOID = 1.15112 au 
 Jupiter MOID = 2.49958 au 
 T_jup = 3.501 
[ 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 15.2 mag n/a MPO337338  
rotation period rot_per 9.05 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Binzel, R.P.; Xu, S.; Bus, S.J.; Bowell, E. (1992) Icarus 99, 225-237; Science 257, 779-782.]

9527 (1981 EH23)          Discovered 1981-Mar-03 by Bus, S. J. at Siding Spring
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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