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74755 (1999 RL199)
Classification: Main-belt Asteroid          SPK-ID: 2074755
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2267703881768257 4.2101e-08  
a 2.389164566813451 1.2685e-08 au
q 1.847372790578847 1.0411e-07 au
i 4.588368967834084 4.2306e-06 deg
node 289.2293673800141 5.9606e-05 deg
peri 14.99649556213708 6.0672e-05 deg
M 257.7077003642571 1.4965e-05 deg
tp 2459383.772770473464
(2021-Jun-18.27277047)
5.7963e-05 TDB
period 1348.86201465584
3.69
1.0742e-05
2.941e-08
d
yr
n .266891643539872 2.1255e-09 deg/d
Q 2.930956343048055 1.5561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-04-01  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5389  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:13  

Additional Information
 Earth MOID = .832571 au 
 Jupiter MOID = 2.31726 au 
 T_jup = 3.494 
[ 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 15.8   n/a MPO468695  
diameter diameter 3.918 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74755 (1999 RL199)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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