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26308 (1998 SM165)
Classification: TransNeptunian Object          SPK-ID: 2026308
Ephemeris | Orbit Diagram | Orbital Elements | 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 .3742690374667764 7.6984e-06  
a 47.81773289022642 0.001063 au
q 29.92103602755796 0.00032834 au
i 13.4809532857304 3.2406e-05 deg
node 183.0565841343316 9.9895e-05 deg
peri 131.1123592176814 0.0018217 deg
M 50.04076158801307 0.002278 deg
tp 2442412.331889052311
(1974-Dec-30.83188905)
0.20476 TDB
period 120776.3496826736
330.67
4.0274
0.01103
d
yr
n .002980716017215787 9.9396e-08 deg/d
Q 65.71442975289487 0.0014609 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      13888 days (38.02 yr)  
   first obs. used      1982-10-12  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .59202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:15:23  

Additional Information
 Earth MOID = 28.9217 au 
 Jupiter MOID = 24.961 au 
 T_jup = 5.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.5   n/a MPO531316  
rotation period rot_per 7.98 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:
[Romanishin, W.; Tegler, S.C.; Rettig, T.W.; Consolmagno, G.; Botthof, B. (2001) Bull. Amer. Astron. Soc. 33, 1031.]

26308 (1998 SM165)          Discovered 1998-Sep-16 by Danzl, N. at Steward
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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