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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749670731622964 5.7744e-08  
a 2.643991205754713 2.0825e-08 AU
q 2.18137980301696 1.6034e-07 AU
i 14.16570321539242 7.1758e-06 deg
node 167.5968854425463 2.2935e-05 deg
peri 302.9942189518367 3.0475e-05 deg
M 60.03714030179591 1.9285e-05 deg
tp 2456738.617828594657
(2014-Mar-22.11782859)
8.389e-05 JED
period 1570.320991839503
4.30
1.8553e-05
5.08e-08
d
yr
n .2292524916057382 2.7085e-09 deg/d
Q 3.106602608492466 2.4469e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      8568 days (23.46 yr)  
   first obs. used      1991-09-12  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52285  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:05:02  

Additional Information
 Earth MOID = 1.23086 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. 2015-Feb); 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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