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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2176500232902 4.2077e-08  
a 2.537429689095326 8.915e-09 au
q 1.985158058166483 1.0782e-07 au
i 9.329531639880855 3.8421e-06 deg
node 15.77061284097463 2.3745e-05 deg
peri 320.5320882932706 2.4612e-05 deg
M 242.1990913472821 9.0828e-06 deg
tp 2459879.598392061347
(2022-Oct-27.09839206)
3.8856e-05 TDB
period 1476.35042149628
4.04
7.7805e-06
2.13e-08
d
yr
n .2438445471740648 1.2851e-09 deg/d
Q 3.089701320024168 1.0855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      9751 days (26.70 yr)  
   first obs. used      1994-10-01  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46712  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:54:38  

Additional Information
 Earth MOID = .985861 au 
 Jupiter MOID = 2.33951 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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