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192451 (1997 WQ42)
Classification: Main-belt Asteroid          SPK-ID: 2192451
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1835913678415478 3.2773e-08  
a 2.470482774498769 9.25e-09 au
q 2.016923462699558 8.5326e-08 au
i 2.369125147649437 5.6592e-06 deg
node 16.4134525889527 9.2305e-05 deg
peri 61.63899419563973 9.4674e-05 deg
M 330.5172387927452 1.9775e-05 deg
tp 2459316.654710356806
(2021-Apr-12.15471036)
7.8139e-05 TDB
period 1418.310023084284
3.88
7.9656e-06
2.181e-08
d
yr
n .2538232080015461 1.4255e-09 deg/d
Q 2.92404208629798 1.0948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      8444 days (23.12 yr)  
   first obs. used      1997-11-29  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53776  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:09  

Additional Information
 Earth MOID = 1.03321 au 
 Jupiter MOID = 2.33176 au 
 T_jup = 3.460 
[ 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 16.1   n/a MPO440063  
rotation period rot_per 5.39 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

192451 (1997 WQ42)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1997 WQ42 = 2001 XO99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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