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85689 (1998 RT55)
Classification: Main-belt Asteroid          SPK-ID: 2085689
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08387277644437306 4.7218e-08  
a 2.785763851132499 1.5421e-08 au
q 2.552114102419647 1.3643e-07 au
i 3.366054449869091 4.457e-06 deg
node 254.7925173211749 7.5273e-05 deg
peri 120.2876232410873 7.8648e-05 deg
M 314.2879251794661 2.3772e-05 deg
tp 2459612.146943909691
(2022-Feb-01.64694391)
0.00011267 TDB
period 1698.30181877056
4.65
1.4101e-05
3.861e-08
d
yr
n .2119764555517066 1.7601e-09 deg/d
Q 3.01941359984535 1.6714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      10222 days (27.99 yr)  
   first obs. used      1993-08-13  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55175  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:54:14  

Additional Information
 Earth MOID = 1.55439 au 
 Jupiter MOID = 2.41399 au 
 T_jup = 3.324 
[ 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 15.15   n/a MPO637175  
diameter diameter 6.632 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85689 (1998 RT55)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 RT55 = 2003 UW46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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