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46831 (1998 QH)
Classification: Main-belt Asteroid          SPK-ID: 2046831
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1019708732996936 3.505e-08  
a 2.403373823011785 1.0338e-08 au
q 2.15829969541365 8.4491e-08 au
i 7.438145701054216 4.2955e-06 deg
node 335.5108676267055 3.1368e-05 deg
peri 299.8499209852255 3.8353e-05 deg
M 48.96863844076561 2.2854e-05 deg
tp 2459015.383152898567
(2020-Jun-14.88315290)
8.6318e-05 TDB
period 1360.913169704092
3.73
8.7809e-06
2.404e-08
d
yr
n .2645282652957764 1.7068e-09 deg/d
Q 2.64844795060992 1.1392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1279  
   data-arc span      8169 days (22.37 yr)  
   first obs. used      1998-08-01  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:52:47  

Additional Information
 Earth MOID = 1.15156 au 
 Jupiter MOID = 2.48683 au 
 T_jup = 3.506 
[ 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 14.89   n/a E2021B10  
rotation period rot_per 4.287 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

46831 (1998 QH)          Discovered 1998-Aug-17 by Comba, P. G. at Prescott
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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