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74103 (1998 QP31)
Classification: Main-belt Asteroid          SPK-ID: 2074103
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08169506548283838 4.4358e-08  
a 2.306580010876255 8.6617e-09 au
q 2.118143805846314 1.0125e-07 au
i 6.490872889195873 4.2462e-06 deg
node 107.5590647408213 3.6436e-05 deg
peri 31.61869398617197 4.5125e-05 deg
M 159.4635352710224 2.7767e-05 deg
tp 2458033.725763905853
(2017-Oct-07.22576391)
9.6909e-05 TDB
period 1279.532180489484
3.50
7.2074e-06
1.973e-08
d
yr
n .2813528299556189 1.5848e-09 deg/d
Q 2.495016215906197 9.3693e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1419  
   data-arc span      7783 days (21.31 yr)  
   first obs. used      1998-07-31  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:24:34  

Additional Information
 Earth MOID = 1.13532 au 
 Jupiter MOID = 2.52267 au 
 T_jup = 3.575 
[ 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 14.6   n/a MPO395673  
diameter diameter 2.676 km 0.351 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.19 h n/a LCDB (Rev. 2019-January); 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.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
geometric albedo albedo 0.429   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74103 (1998 QP31)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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