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52906 (1998 SW81)
Classification: Main-belt Asteroid          SPK-ID: 2052906
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857447061400078 4.2103e-08  
a 2.341051564065341 8.1968e-09 au
q 1.906213629239419 9.643e-08 au
i 2.25282198050396 4.4921e-06 deg
node 201.3115959553417 0.00010522 deg
peri 199.2682282463788 0.00010586 deg
M 48.06699824298514 1.1167e-05 deg
tp 2459025.813478452199
(2020-Jun-25.31347845)
4.0384e-05 TDB
period 1308.322758981231
3.58
6.8713e-06
1.881e-08
d
yr
n .2751614596082744 1.4451e-09 deg/d
Q 2.775889498891264 9.7193e-09 au
  Orbit Determination Parameters
   # obs. used (total)      588  
   data-arc span      10726 days (29.37 yr)  
   first obs. used      1991-11-05  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49607  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:20:28  

Additional Information
 Earth MOID = .913453 au 
 Jupiter MOID = 2.63204 au 
 T_jup = 3.540 
[ 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 16.79   n/a MPCxxxxx  
rotation period rot_per 1.9 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, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

52906 (1998 SW81)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SW81 = 2000 GZ118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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