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52818 (1998 QH103)
Classification: Main-belt Asteroid          SPK-ID: 2052818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174916207117409 4.3047e-08  
a 2.537882536168528 8.9535e-09 au
q 1.985914350201212 1.1015e-07 au
i 9.32833794609566 3.8525e-06 deg
node 15.77257887994717 2.5242e-05 deg
peri 320.4946785450145 2.6083e-05 deg
M 194.4524001950354 9.0104e-06 deg
tp 2459879.588053590760
(2022-Oct-27.08805359)
3.9132e-05 TDB
period 1476.745658533807
4.04
7.8148e-06
2.14e-08
d
yr
n .2437792844824934 1.2901e-09 deg/d
Q 3.089850722135845 1.0901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1618  
   data-arc span      9670 days (26.48 yr)  
   first obs. used      1994-10-01  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46663  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:20:07  

Additional Information
 Earth MOID = .985591 au 
 Jupiter MOID = 2.33931 au 
 T_jup = 3.396 
[ 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 15.07   n/a MPCxxxxx  
diameter diameter 2.665 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 47.3214 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 0.172   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52818 (1998 QH103)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QH103 = 1997 ET47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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