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JPL Small-Body Database Browser
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56005 (1998 SK169)
Classification: Main-belt Asteroid          SPK-ID: 2056005
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167140061614264 4.6778e-08  
a 2.768966326637254 1.5519e-08 au
q 2.306161124195281 1.3281e-07 au
i 10.02855989238152 5.118e-06 deg
node 153.3594999102202 2.4578e-05 deg
peri 200.5622861610772 2.7512e-05 deg
M 181.9689203190713 1.3883e-05 deg
tp 2459432.777709433434
(2021-Aug-06.27770943)
6.8191e-05 TDB
period 1682.964434822403
4.61
1.4149e-05
3.874e-08
d
yr
n .21390826362768 1.7983e-09 deg/d
Q 3.231771529079226 1.8113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      14506 days (39.72 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:22:56  

Additional Information
 Earth MOID = 1.30239 au 
 Jupiter MOID = 2.20059 au 
 T_jup = 3.296 
[ 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 14.8   n/a MPO432115  
rotation period rot_per 7.33 h n/a LCDB (Rev. 2019-January); 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.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

56005 (1998 SK169)          Discovered 1998-Sep-22 by LONEOS at Anderson Mesa
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SK169 = 1979 OP9 = 2002 LA43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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