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6652 (1991 SJ1)
Classification: Main-belt Asteroid          SPK-ID: 2006652
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1745702769363608 4.6397e-08  
a 2.644525040138436 1.6349e-08 au
q 2.182869571516328 1.2416e-07 au
i 14.16581382765571 5.9284e-06 deg
node 167.5926716321704 2.1765e-05 deg
peri 303.0075312274535 2.8164e-05 deg
M 197.589455080702 1.9175e-05 deg
tp 2458309.149809887884
(2018-Jul-09.64980989)
8.5972e-05 JED
period 1570.79659874551
4.30
1.4566e-05
3.988e-08
d
yr
n .2291830783740606 2.1253e-09 deg/d
Q 3.106180508760544 1.9203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1082  
   data-arc span      8742 days (23.93 yr)  
   first obs. used      1991-09-12  
   last obs. used      2015-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51963  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:20:05  

Additional Information
 Earth MOID = 1.23086 au 
 Jupiter MOID = 2.08301 au 
 T_jup = 3.329 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO290519  
rotation period rot_per 85.56 h n/a LCDB (Rev. 2016-February); 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:
[Hills, K. (2014) Minor Planet Bul. 41, 177-178.]

6652 (1991 SJ1)          Discovered 1991-Sep-16 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 SJ1 = 1993 CQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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