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23494 (1991 SE2)
Classification: Main-belt Asteroid          SPK-ID: 2023494
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289949874347535 4.7895e-08  
a 2.362576279024561 1.2947e-08 AU
q 1.821558153695685 1.1262e-07 AU
i 2.41726629401387 5.7064e-06 deg
node 168.1485062770061 0.00012906 deg
peri 145.2874776342919 0.00012976 deg
M 166.6727839142692 1.5525e-05 deg
tp 2456386.399608360816
(2013-Apr-03.89960836)
5.5097e-05 JED
period 1326.408162137739
3.63
1.0903e-05
2.985e-08
d
yr
n .2714096688155152 2.2309e-09 deg/d
Q 2.903594404353437 1.5911e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      991  
   data-arc span      22557 days (61.76 yr)  
   first obs. used      1953-01-09  
   last obs. used      2014-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51085  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:43:01  

Additional Information
 Earth MOID = .80919 AU 
 T_jup = 3.513 
[ 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 14.4 mag n/a MPO266078  

23494 (1991 SE2)          Discovered 1991-Sep-16 by Holt, H. E. at Palomar (675)
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 SE2 = 1994 GM 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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