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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2208775537375554 5.5084e-08  
a 2.200314428280639 1.4522e-08 AU
q 1.714314359908564 1.2303e-07 AU
i 6.851091928974677 5.9637e-06 deg
node 79.59164347938862 4.8943e-05 deg
peri 229.1337149845278 5.1209e-05 deg
M 66.16664923021553 2.1229e-05 deg
tp 2456781.390005509902
(2014-May-03.89000551)
6.8709e-05 JED
period 1192.135296771449
3.26
1.1802e-05
3.231e-08
d
yr
n .3019791469768196 2.9896e-09 deg/d
Q 2.686314496652714 1.773e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      22521 days (61.66 yr)  
   first obs. used      1952-11-12  
   last obs. used      2014-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5259  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:22:42  

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 13.4 mag n/a PDS3 (MPC 38326)  

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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