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181823 (1998 SK12)
Classification: Main-belt Asteroid          SPK-ID: 2181823
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2565673217818567 4.6648e-08  
a 2.348445719793177 6.8646e-09 au
q 1.745911291115777 1.096e-07 au
i 8.351718440154784 4.5032e-06 deg
node 182.9466924486035 2.8789e-05 deg
peri 186.0716122445632 3.0082e-05 deg
M 58.62565773893272 8.0621e-06 deg
tp 2458986.430672684105
(2020-May-16.93067268)
2.8969e-05 TDB
period 1314.52611034066
3.60
5.7636e-06
1.578e-08
d
yr
n .2738629511944086 1.2008e-09 deg/d
Q 2.950980148470577 8.6258e-09 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      8244 days (22.57 yr)  
   first obs. used      1998-08-23  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:09:51  

Additional Information
 Earth MOID = .743791 au 
 Jupiter MOID = 2.51256 au 
 T_jup = 3.501 
[ 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 16.45   n/a E2021B55  
rotation period rot_per 2.48 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

181823 (1998 SK12)          Discovered 1998-Sep-21 by Visnjan at Visnjan
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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