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150215 (1998 SP111)
Classification: Main-belt Asteroid          SPK-ID: 2150215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653488929101611 7.0186e-08  
a 2.309138742859463 6.8265e-09 au
q 1.927325208151689 1.6248e-07 au
i 5.122485137655419 7.0275e-06 deg
node 22.08457940177885 4.3486e-05 deg
peri 318.9859003182969 4.7347e-05 deg
M 141.2927132237809 1.5643e-05 deg
tp 2458697.473652700836
(2019-Aug-01.97365270)
5.5427e-05 TDB
period 1281.661884012997
3.51
5.6835e-06
1.556e-08
d
yr
n .280885313428225 1.2456e-09 deg/d
Q 2.690952277567236 7.9552e-09 au
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8175 days (22.38 yr)  
   first obs. used      1998-09-01  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:38:38  

Additional Information
 Earth MOID = .921021 au 
 Jupiter MOID = 2.70557 au 
 T_jup = 3.562 
[ 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 16.6   n/a MPO502898  
rotation period rot_per 3.763 h n/a LCDB (Rev. 2020-October); 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.]

150215 (1998 SP111)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

[ show close-approach data ]
Alternate Designations
 1998 SP111 = 2005 QA176 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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