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30800 (1989 ST)
Classification: Mars-crossing Asteroid          SPK-ID: 2030800
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2747963165626246 7.3908e-08  
a 2.274003211841718 1.4441e-08 AU
q 1.649115505376036 1.6314e-07 AU
i 4.493711890578389 6.1053e-06 deg
node 292.4938509850875 6.7373e-05 deg
peri 22.80999782574013 6.7935e-05 deg
M 158.8045842588616 1.3168e-05 deg
tp 2456447.983093051320
(2013-Jun-04.48309305)
4.2052e-05 JED
period 1252.5210618435
3.43
1.1931e-05
3.267e-08
d
yr
n .2874203164856491 2.7379e-09 deg/d
Q 2.8988909183074 1.841e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1042  
   data-arc span      21719 days (59.46 yr)  
   first obs. used      1955-10-23  
   last obs. used      2015-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50288  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:03:13  

Additional Information
 Earth MOID = .637346 AU 
 T_jup = 3.556 
[ 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 14.6 mag n/a MPO337515  

30800 (1989 ST)          Discovered 1989-Sep-29 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 ST = 1999 NV12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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