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5817 Robertfrazer (1989 RZ)
Classification: Mars-crossing Asteroid          SPK-ID: 2005817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3404518121333704 3.8311e-08  
a 2.408005235269888 6.5938e-09 au
q 1.588195489295612 9.3019e-08 au
i 21.10716793280465 6.4725e-06 deg
node 340.4656088945524 1.1975e-05 deg
peri 82.83432469321512 1.541e-05 deg
M 45.32743266364402 6.6547e-06 deg
tp 2458828.652512188250
2.5269e-05 TDB
period 1364.848877969883
n .2637654657675175 1.0834e-09 deg/d
Q 3.227814981244164 8.8387e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1632  
   data-arc span      22041 days (60.34 yr)  
   first obs. used      1959-09-01  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .423  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 20:11:55  

Additional Information
 Earth MOID = .74502 au 
 Jupiter MOID = 2.58063 au 
 T_jup = 3.354 
[ 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 12.9   n/a MPO502209  
diameter diameter 6.497 km 1.399 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4.051 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site,]
[Koff, R.A. (2005) Minor Planet Bull. 32, 32-34.]
geometric albedo albedo 0.297   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5817 Robertfrazer           Discovered 1989 Sept. 5 by E. F. Helin at Palomar.
Robert E. Frazer (b. 1918), longtime friend and colleague of the discoverer, studied optics at the University of Rochester. He has participated in and supported many space-related programs at the Jet Propulsion Laboratory, ranging from the construction of early deep space antennas to devising a means of replicating optical mirrors.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1989 RZ = 1959 RH = 1959 RQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Feb-18 16:57 UT
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