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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101940886375088 3.5171e-08  
a 2.403712237201153 1.0391e-08 au
q 2.158675681150222 8.4791e-08 au
i 7.435895606806668 4.3722e-06 deg
node 335.5232282756742 3.1868e-05 deg
peri 300.0604357342577 3.9244e-05 deg
M 355.8847130853555 2.4022e-05 deg
tp 2459016.060364176713
(2020-Jun-15.56036418)
9.084e-05 TDB
period 1361.200620953683
3.73
8.8264e-06
2.417e-08
d
yr
n .2644724035960087 1.7149e-09 deg/d
Q 2.648748793252085 1.145e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1219  
   data-arc span      7990 days (21.88 yr)  
   first obs. used      1998-08-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49471  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:42:05  

Additional Information
 Earth MOID = 1.15372 au 
 Jupiter MOID = 2.48818 au 
 T_jup = 3.506 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456689.5 (2014-Feb-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023210943932959 3.5341e-08  
q 2.156650315447864 8.5157e-08 au
tp 2456292.505543938410
(2012-Dec-31.00554394)
8.9901e-05 TDB
node 335.5728802320876 3.1886e-05 deg
peri 299.517135319258 3.9142e-05 deg
i 7.435692494831445 4.3706e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1219  
   data-arc span      7990 days (21.88 yr)  
   first obs. used      1998-08-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49471  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:42:05  

Additional Information
 Jupiter MOID = 2.48818 au 
 T_jup = 3.506 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.248957443906618E-15 -2.991196135724654E-15 -1.415494494447756E-13 5.189916313457373E-15 -3.480370237602161E-14 -2.260496094281078E-16
q -2.991196135724654E-15 7.251667659141451E-15 2.647220227009293E-13 -1.225717064871728E-14 7.056433655922181E-14 6.882507059028366E-16
tp -1.415494494447756E-13 2.647220227009293E-13 8.082141739447366E-9 1.579296468097906E-11 2.056602653772042E-9 -3.636107643567949E-13
node 5.189916313457373E-15 -1.225717064871728E-14 1.579296468097906E-11 1.016732661319847E-9 -1.003744692333993E-9 1.6762063176742E-11
peri -3.480370237602161E-14 7.056433655922181E-14 2.056602653772042E-9 -1.003744692333993E-9 1.53207013369684E-9 -1.671005787606696E-11
i -2.260496094281078E-16 6.882507059028366E-16 -3.636107643567949E-13 1.6762063176742E-11 -1.671005787606696E-11 1.910222799412211E-11

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 14.9   n/a MPO365800  
rotation period rot_per 4.287 h n/a LCDB (Rev. 2019-August); 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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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