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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1855863251627703 4.9108e-08  
a 2.340579015516639 8.9415e-09 au
q 1.906199557273812 1.1466e-07 au
i 2.252981819927086 5.6341e-06 deg
node 201.3157452766994 0.00010586 deg
peri 199.2494194208707 0.00010651 deg
M 353.0436591677274 1.1658e-05 deg
tp 2459025.773287581311
(2020-Jun-25.27328758)
4.2397e-05 TDB
period 1307.926645437188
3.58
7.4949e-06
2.052e-08
d
yr
n .2752447939308296 1.5772e-09 deg/d
Q 2.774958473759467 1.0601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      410  
   data-arc span      9666 days (26.46 yr)  
   first obs. used      1991-11-05  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55241  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 04:22:58  

Additional Information
 Earth MOID = .914451 au 
 Jupiter MOID = 2.63202 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 16.7   n/a MPO439449  
rotation period rot_per 1.9 h n/a LCDB (Rev. 2019-August); 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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