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78842 (2003 QH47)
Classification: Main-belt Asteroid          SPK-ID: 2078842
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872668717450656 3.1191e-08  
a 2.804724571666949 1.3512e-08 au
q 2.27949257502436 8.6975e-08 au
i 11.89865533007443 4.3433e-06 deg
node 212.2931113771018 1.3785e-05 deg
peri 212.5446657637762 1.7017e-05 deg
M 171.1539523134193 1.1408e-05 deg
tp 2458184.823054592589
(2018-Mar-07.32305459)
5.1686e-05 TDB
period 1715.669994046903
4.70
1.2398e-05
3.394e-08
d
yr
n .2098305625494074 1.5163e-09 deg/d
Q 3.329956568309538 1.6042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1287  
   data-arc span      8004 days (21.91 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:19  

Additional Information
 Earth MOID = 1.30131 au 
 Jupiter MOID = 2.06742 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457320.5 (2015-Oct-25.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881729136138914 3.1146e-08  
q 2.276271343727271 8.6842e-08 au
tp 2456471.035849560396
(2013-Jun-27.53584956)
4.7937e-05 TDB
node 212.3112553680829 1.3783e-05 deg
peri 212.7924464274309 1.6993e-05 deg
i 11.9015176486441 4.3443e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1287  
   data-arc span      8004 days (21.91 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:19  

Additional Information
 Jupiter MOID = 2.06742 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.700748164177056E-16 -2.683223142782867E-15 -5.766219992382768E-13 -2.512388104898521E-15 -1.056166815444552E-13 4.792866571979532E-17
q -2.683223142782867E-15 7.541514785963062E-15 1.704794180849325E-12 6.602878547241163E-15 3.257879272736027E-13 3.154857061779551E-16
tp -5.766219992382768E-13 1.704794180849325E-12 2.29800123139064E-9 2.0423663982124E-12 4.799521653797968E-10 -1.286912683077152E-12
node -2.512388104898521E-15 6.602878547241163E-15 2.0423663982124E-12 1.899638846385577E-10 -1.853391813896955E-10 -9.52050783758765E-12
peri -1.056166815444552E-13 3.257879272736027E-13 4.799521653797968E-10 -1.853391813896955E-10 2.887692829940713E-10 9.103071608036737E-12
i 4.792866571979532E-17 3.154857061779551E-16 -1.286912683077152E-12 -9.52050783758765E-12 9.103071608036737E-12 1.887273374316836E-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 14.6   n/a MPO337850  
diameter diameter 6.587 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.10713 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78842 (2003 QH47)          Discovered 2003-Aug-24 by LINEAR at Socorro
Reference: 20040415/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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