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JPL Small-Body Database Browser
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66039 (1998 QS74)
Classification: Main-belt Asteroid          SPK-ID: 2066039
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08527411420468908 4.962e-08  
a 2.870570007044145 1.9438e-08 au
q 2.625784692430908 1.4561e-07 au
i 16.24834001799275 5.5863e-06 deg
node 302.7058517356937 1.404e-05 deg
peri 22.9298348209003 3.0471e-05 deg
M 188.5588972333109 2.958e-05 deg
tp 2459846.485836109215
(2022-Sep-23.98583611)
0.00014904 TDB
period 1776.44039897352
4.86
1.8044e-05
4.94e-08
d
yr
n .2026524504892022 2.0584e-09 deg/d
Q 3.115355321657383 2.1095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1182  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45966  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:50:08  

Additional Information
 Earth MOID = 1.61854 au 
 Jupiter MOID = 2.17574 au 
 T_jup = 3.234 
[ 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 13.9   n/a MPO337765  
diameter diameter 10.262 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.62 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.056   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66039 (1998 QS74)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QS74 = 1999 XY192 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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