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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315262542546984 4.337e-08  
a 2.726237435113424 1.7237e-08 au
q 2.367665637064019 1.2313e-07 au
i 17.40843772008913 5.7516e-06 deg
node 168.8179974460306 1.4062e-05 deg
peri 140.2894987511341 2.6032e-05 deg
M 59.08800662795684 2.131e-05 deg
tp 2459126.638592845498
(2020-Oct-04.13859285)
9.6985e-05 TDB
period 1644.159485482713
4.50
1.5593e-05
4.269e-08
d
yr
n .2189568610458168 2.0766e-09 deg/d
Q 3.084809233162829 1.9504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      839  
   data-arc span      8099 days (22.17 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57305  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:20  

Additional Information
 Earth MOID = 1.37771 au 
 Jupiter MOID = 2.36814 au 
 T_jup = 3.278 
[ 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 14.96   n/a E2021B10  
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

Alternate Designations
 1998 RQ57 = 2001 FT60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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