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11835 (1985 RA4)
Classification: Main-belt Asteroid          SPK-ID: 2011835
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1014181585442563 4.1834e-08  
a 2.747995365540663 1.4115e-08 au
q 2.469298735879378 1.1457e-07 au
i 7.253088288482384 5.3634e-06 deg
node 349.6905215318319 3.2363e-05 deg
peri 306.8495754603869 4.0881e-05 deg
M 179.5410235971742 2.5899e-05 deg
tp 2457770.680536782826
(2017-Jan-17.18053678)
0.00011972 TDB
period 1663.881606403432
4.56
1.282e-05
3.51e-08
d
yr
n .2163615479698456 1.667e-09 deg/d
Q 3.026691995201947 1.5547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1799  
   data-arc span      12506 days (34.24 yr)  
   first obs. used      1985-09-10  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49031  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:20:03  

Additional Information
 Earth MOID = 1.46135 au 
 Jupiter MOID = 2.1976 au 
 T_jup = 3.328 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO340783  
diameter diameter 7.237 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.161   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11835 (1985 RA4)          Discovered 1985-Sep-10 by Debehogne, H. at La Silla
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1985 RA4 = 1994 PL28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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