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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2749286708237474 5.8451e-08  
a 2.272604262582093 1.207e-08 au
q 1.647800193362015 1.311e-07 au
i 4.486849563980682 5.711e-06 deg
node 292.4068383397243 6.5529e-05 deg
peri 23.17012760458321 6.6013e-05 deg
M 330.9413749607016 1.2155e-05 deg
tp 2457701.508218748606
(2016-Nov-09.00821875)
4.2812e-05 JED
period 1251.365427659483
3.43
9.9688e-06
2.729e-08
d
yr
n .2876857487371481 2.2918e-09 deg/d
Q 2.89740833180217 1.5388e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      22094 days (60.49 yr)  
   first obs. used      1955-10-23  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49226  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:56:46  

Additional Information
 Earth MOID = .634686 au 
 Jupiter MOID = 2.39982 au 
 T_jup = 3.557 
[ 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  
rotation period rot_per 2.7398 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

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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