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13903 (1975 ST)
Classification: Main-belt Asteroid          SPK-ID: 2013903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .238712563585058 3.5021e-08  
a 2.673338063589242 1.1515e-08 au
q 2.035178681100339 9.7233e-08 au
i 11.20520607972158 3.7754e-06 deg
node 187.1323335787724 2.0554e-05 deg
peri 97.55652142357073 2.2861e-05 deg
M 51.35662615625832 7.8156e-06 deg
tp 2458372.742212976598
(2018-Sep-11.24221298)
3.4569e-05 TDB
period 1596.537963357489
4.37
1.0315e-05
2.824e-08
d
yr
n .2254879046176433 1.4568e-09 deg/d
Q 3.311497446078145 1.4263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1257  
   data-arc span      15687 days (42.95 yr)  
   first obs. used      1975-09-30  
   last obs. used      2018-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4901  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 17:20:59  

Additional Information
 Earth MOID = 1.05535 au 
 Jupiter MOID = 2.0081 au 
 T_jup = 3.312 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO452366  
diameter diameter 8.785 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.933 h n/a LCDB (Rev. 2019-January); 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:
[Clark, M. (2015) Minor Planet Bull. 42, 15-20.]
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13903 (1975 ST)          Discovered 1975-Sep-30 by Bus, S. J. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1975 ST = 1996 HV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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