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39465 (1978 RW6)
Classification: Main-belt Asteroid          SPK-ID: 2039465
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 .06927876091900248 3.9289e-08  
a 2.328193248048809 8.9945e-09 au
q 2.166898904644 9.4955e-08 au
i 7.602116755764307 4.1435e-06 deg
node 332.4134321630759 2.4423e-05 deg
peri 9.781607812817935 3.4503e-05 deg
M 266.082268067392 2.5285e-05 deg
tp 2459339.010434500822
(2021-May-04.51043450)
9.1623e-05 TDB
period 1297.558553774925
3.55
7.5193e-06
2.059e-08
d
yr
n .2774441268586063 1.6078e-09 deg/d
Q 2.489487591453619 9.6176e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1519  
   data-arc span      15264 days (41.79 yr)  
   first obs. used      1978-09-02  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48654  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:01:30  

Additional Information
 Earth MOID = 1.15845 au 
 Jupiter MOID = 2.78502 au 
 T_jup = 3.558 
[ 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 14.8   n/a MPO358989  
diameter diameter 2.421 km 0.296 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.477   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39465 (1978 RW6)          Discovered 1978-Sep-02 by Lagerkvist, C.-I. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1978 RW6 = 1998 EH18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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