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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456250.5 (2012-Nov-19.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1022774156388427 4.1686e-08  
q 2.465674782968372 1.1415e-07 au
tp 2456097.468324606475
(2012-Jun-18.96832461)
0.00011911 TDB
node 349.8252153117753 3.2453e-05 deg
peri 304.8931264295695 4.0778e-05 deg
i 7.2456283961145 5.3559e-06 deg
  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
 Jupiter MOID = 2.1976 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.737703856875879E-15 -4.729925502601868E-15 1.363137278249886E-12 9.444919495510289E-15 2.754014020087634E-13 1.086910727305348E-15
q -4.729925502601868E-15 1.302908840771752E-14 -3.885348046948718E-12 -2.532439828030583E-14 -7.833677519767289E-13 -2.382104058223694E-15
tp 1.363137278249886E-12 -3.885348046948718E-12 1.418648793034683E-8 2.388867573520282E-11 2.956192898319726E-9 4.98959884434151E-12
node 9.444919495510289E-15 -2.532439828030583E-14 2.388867573520282E-11 1.053224083544526E-9 -1.039490273971912E-9 -1.11836305591179E-11
peri 2.754014020087634E-13 -7.833677519767289E-13 2.956192898319726E-9 -1.039490273971912E-9 1.662865326067318E-9 1.208255415794432E-11
i 1.086910727305348E-15 -2.382104058223694E-15 4.98959884434151E-12 -1.11836305591179E-11 1.208255415794432E-11 2.868575974472737E-11

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

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