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1362 Griqua (1935 QG1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001362
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3716683161068092 3.4471e-08  
a 3.215734670100065 1.271e-08 au
q 2.020547980217688 1.1217e-07 au
i 24.22739359331173 4.7836e-06 deg
node 121.3343919395289 1.0523e-05 deg
peri 261.7691444285694 1.1812e-05 deg
M 85.04084992830701 7.0173e-06 deg
tp 2458102.941866374928
(2017-Dec-15.44186638)
3.9543e-05 TDB
period 2106.292778776698
5.77
1.2487e-05
3.419e-08
d
yr
n .1709164099252538 1.0133e-09 deg/d
Q 4.410921359982442 1.7433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2838  
   data-arc span      32440 days (88.82 yr)  
   first obs. used      1931-01-16  
   last obs. used      2019-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42432  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:21:04  

Additional Information
 Earth MOID = 1.17374 au 
 Jupiter MOID = 1.93695 au 
 T_jup = 2.949 
[ 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 11.2   n/a MPO502166 IRAS observations used: 4
diameter diameter 26.936 km 0.363 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.907 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Taylor, R.C.; Gehrels, T.; Capen, R.C. (1976) Astron. J. 81, 778-786.]
[Bembrick, C. (2001) Minor Planet Bull. 28, 42-43.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.082   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.720   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=16.13 deg.
U-B UB 0.360   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=16.13 deg.
Tholen spectral type spec_T CP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1362 Griqua (1935 QG1)          Discovered 1935-Jul-31 by Jackson, C. at Johannesburg (UO)
Discovery is clearly July 31. Preliminary designation is associated with the Aug. 27 observation.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1935 QG1 = 1931 BN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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