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129690 (1998 SF16)
Classification: Main-belt Asteroid          SPK-ID: 2129690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06267581622199939 3.4336e-08  
a 2.858148997064589 1.8142e-08 au
q 2.679012175789477 9.5654e-08 au
i 1.988345563108043 5.6139e-06 deg
node 177.4701068571333 0.00011257 deg
peri 261.5010321547319 0.00012383 deg
M 98.91740678879343 5.033e-05 deg
tp 2458515.551136214226
(2019-Feb-01.05113621)
0.00024581 TDB
period 1764.922844526665
4.83
1.6804e-05
4.601e-08
d
yr
n .2039749222559065 1.9421e-09 deg/d
Q 3.037285818339702 1.9279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7893 days (21.61 yr)  
   first obs. used      1998-09-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53185  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:46:16  

Additional Information
 Earth MOID = 1.69542 au 
 Jupiter MOID = 2.11223 au 
 T_jup = 3.299 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO266434  
rotation period rot_per 7.38 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

129690 (1998 SF16)          Discovered 1998-Sep-16 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1998 SF16 = 2003 SW156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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