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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08169506555287742 4.4367e-08  
a 2.306580010914603 8.6704e-09 au
q 2.118143805719978 1.0127e-07 au
i 6.490873219287174 4.2772e-06 deg
node 107.5590639995004 3.6453e-05 deg
peri 31.61869433184564 4.5203e-05 deg
M 159.4635355941678 2.7836e-05 deg
tp 2458033.725762743177
(2017-Oct-07.22576274)
9.7172e-05 TDB
period 1279.532180521393
3.50
7.2146e-06
1.975e-08
d
yr
n .2813528299486025 1.5864e-09 deg/d
Q 2.495016216109228 9.3787e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1412  
   data-arc span      7775 days (21.29 yr)  
   first obs. used      1998-07-31  
   last obs. used      2019-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51921  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:44:46  

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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