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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2748737156790034 7.3887e-08  
a 2.272938634459097 1.4618e-08 au
q 1.648167546494965 1.6297e-07 au
i 4.486691955807249 6.0996e-06 deg
node 292.4157887762283 6.7581e-05 deg
peri 23.12426303579174 6.8134e-05 deg
M 273.4378100974791 1.4028e-05 deg
tp 2457701.457885589160
(2016-Nov-08.95788559)
5.1034e-05 JED
period 1251.64161089393
3.43
1.2075e-05
3.306e-08
d
yr
n .2876222689200031 2.7748e-09 deg/d
Q 2.897709722423229 1.8637e-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 = .633602 au 
 Jupiter MOID = 2.39825 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  
rotation period rot_per 2.7398 h n/a LCDB (Rev. 2015-December); 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. (2015) 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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