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JPL Small-Body Database Browser
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85692 (1998 RQ57)
Classification: Main-belt Asteroid          SPK-ID: 2085692
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320126045033181 4.3553e-08  
a 2.727949911079002 1.8751e-08 au
q 2.367826138362868 1.2353e-07 au
i 17.39803941482793 6.2948e-06 deg
node 168.8436430877885 1.4769e-05 deg
peri 140.5539874354586 2.8266e-05 deg
M 332.1827381822914 2.4651e-05 deg
tp 2459127.664208353464
(2020-Oct-05.16420835)
0.00011305 TDB
period 1645.708887785054
4.51
1.6968e-05
4.646e-08
d
yr
n .2187507175005423 2.2554e-09 deg/d
Q 3.088073683795136 2.1226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      707  
   data-arc span      7527 days (20.61 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61453  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:00:42  

Additional Information
 Earth MOID = 1.3783 au 
 Jupiter MOID = 2.36482 au 
 T_jup = 3.277 
[ 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 14.9   n/a MPO436374  
diameter diameter 3.149 km 0.595 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85692 (1998 RQ57)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 RQ57 = 2001 FT60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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