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13538 (1991 ST)
Classification: Main-belt Asteroid          SPK-ID: 2013538
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2208775787585364 5.1629e-08  
a 2.200314414139293 9.5812e-09 AU
q 1.714314293836698 1.1209e-07 AU
i 6.851091375276772 5.1994e-06 deg
node 79.59163179606335 4.6335e-05 deg
peri 229.1337173984781 4.8264e-05 deg
M 66.16666795030427 1.5722e-05 deg
tp 2456781.389945630892
(2014-May-03.88994563)
5.1387e-05 JED
period 1192.13528527873
3.26
7.7867e-06
2.132e-08
d
yr
n .3019791498880341 1.9724e-09 deg/d
Q 2.686314534441888 1.1698e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1244  
   data-arc span      22681 days (62.10 yr)  
   first obs. used      1952-11-12  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52781  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:20:10  

Additional Information
 Earth MOID = .709845 AU 
 T_jup = 3.624 
[ 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 13.5 mag n/a MPO319253  

13538 (1991 ST)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring (413)
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 ST = 1952 VD = 1978 SB1 = 1978 TL9 = 1994 LF8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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