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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06912437575497005 4.7094e-08  
a 2.328135558155607 9.302e-09 au
q 2.167204641025152 1.1152e-07 au
i 7.6017355583054 4.9729e-06 deg
node 332.41572663 2.464e-05 deg
peri 9.962374497611501 3.4954e-05 deg
M 154.8891291395871 2.5362e-05 deg
tp 2458042.249320942625
(2017-Oct-15.74932094)
9.0812e-05 TDB
period 1297.510326109068
3.55
7.7762e-06
2.129e-08
d
yr
n .2774544392872436 1.6628e-09 deg/d
Q 2.489066475286062 9.945e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1397  
   data-arc span      14872 days (40.72 yr)  
   first obs. used      1978-09-02  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50297  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:06:51  

Additional Information
 Earth MOID = 1.15788 au 
 Jupiter MOID = 2.78578 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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