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129691 (1998 SH16)
Classification: Main-belt Asteroid          SPK-ID: 2129691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08035178388067638 4.5975e-08  
a 2.868663532795035 2.1032e-08 au
q 2.638161300581511 1.3323e-07 au
i 1.608062524650572 5.4117e-06 deg
node 359.0528766630741 0.0001828 deg
peri 29.13056115133012 0.00018604 deg
M 138.5198250121854 3.4741e-05 deg
tp 2458317.646909632270
(2018-Jul-18.14690963)
0.00016918 TDB
period 1774.670972265218
4.86
1.9517e-05
5.343e-08
d
yr
n .2028545040889976 2.2309e-09 deg/d
Q 3.09916576500856 2.2722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      7829 days (21.43 yr)  
   first obs. used      1998-08-26  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49286  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:05:26  

Additional Information
 Earth MOID = 1.6428 au 
 Jupiter MOID = 2.27559 au 
 T_jup = 3.293 
[ 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 16.1   n/a MPO422459  
rotation period rot_per 17.1 h n/a LCDB (Rev. 2019-August); 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:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]

129691 (1998 SH16)          Discovered 1998-Sep-16 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1998 SH16 = 2004 YX14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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