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134550 (1999 RF157)
Classification: Main-belt Asteroid          SPK-ID: 2134550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1703820209533084 4.3339e-08  
a 2.333548919878748 1.0951e-08 au
q 1.935954138916397 1.0165e-07 au
i 6.180956574728468 4.2154e-06 deg
node 142.7109766274226 4.2348e-05 deg
peri 256.7828399512726 4.3974e-05 deg
M 307.2092306820496 1.1311e-05 deg
tp 2459391.432246170923
(2021-Jun-25.93224617)
4.1183e-05 TDB
period 1302.038396287589
3.56
9.1652e-06
2.509e-08
d
yr
n .2764895421106188 1.9462e-09 deg/d
Q 2.731143700841099 1.2817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      9192 days (25.17 yr)  
   first obs. used      1994-04-03  
   last obs. used      2019-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51501  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:52  

Additional Information
 Earth MOID = .953484 au 
 Jupiter MOID = 2.69834 au 
 T_jup = 3.542 
[ 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 16.2   n/a MPO436657  
diameter diameter 1.480 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.267   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

134550 (1999 RF157)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

Alternate Designations
 1999 RF157 = 2005 GW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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