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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749670470536457 5.3833e-08  
a 2.643991215355437 1.9356e-08 AU
q 2.181379879968917 1.4805e-07 AU
i 14.16570192095737 6.9471e-06 deg
node 167.5968885800378 2.2574e-05 deg
peri 302.9942092819969 2.9766e-05 deg
M 60.03714288734466 1.9186e-05 deg
tp 2456738.617815890087
(2014-Mar-22.11781589)
8.3334e-05 JED
period 1570.321000392605
4.30
1.7244e-05
4.721e-08
d
yr
n .2292524903570635 2.5175e-09 deg/d
Q 3.106602550741958 2.2743e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      8599 days (23.54 yr)  
   first obs. used      1991-09-12  
   last obs. used      2015-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:25:52  

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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