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5102 Benfranklin (1986 RD1)
Classification: Main-belt Asteroid          SPK-ID: 2005102
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1941008942284292 4.0962e-08  
a 2.801486410439325 1.0568e-08 au
q 2.25771539300426 1.1443e-07 au
i 8.10344734209334 4.5023e-06 deg
node 317.247221019125 2.5517e-05 deg
peri 53.16384366324188 2.796e-05 deg
M 50.67069128566777 9.3203e-06 deg
tp 2458759.434236544022
(2019-Oct-02.93423654)
4.4531e-05 TDB
period 1712.69964238082
4.69
9.6911e-06
2.653e-08
d
yr
n .2101944737371257 1.1894e-09 deg/d
Q 3.345257427874391 1.2619e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2260  
   data-arc span      29401 days (80.50 yr)  
   first obs. used      1939-08-08  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:29:35  

Additional Information
 Earth MOID = 1.26759 au 
 Jupiter MOID = 2.1812 au 
 T_jup = 3.283 
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Orbital Elements at Epoch 2456736.5 (2014-Mar-20.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1961572136864465 4.181e-08  
q 2.251161797805853 1.1735e-07 au
tp 2457040.605353208810
(2015-Jan-18.10535321)
4.5042e-05 TDB
node 317.6417402805332 2.5405e-05 deg
peri 51.71081521583314 2.7731e-05 deg
i 8.123796426702755 4.5154e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2260  
   data-arc span      29401 days (80.50 yr)  
   first obs. used      1939-08-08  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:29:35  

Additional Information
 Jupiter MOID = 2.1812 au 
 T_jup = 3.283 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.748099422045948E-15 -4.894142801964547E-15 -7.406786846708379E-13 2.672380788271534E-15 -2.012974593046602E-13 -4.931186651932316E-15
q -4.894142801964547E-15 1.377038270099E-14 1.973762933435789E-12 -7.495005084777947E-15 5.37569765570993E-13 1.450828881714619E-14
tp -7.406786846708379E-13 1.973762933435789E-12 2.028794631235073E-9 -5.931152155951473E-12 5.13128825063892E-10 2.641243845668429E-12
node 2.672380788271534E-15 -7.495005084777947E-15 -5.931152155951473E-12 6.454026049697483E-10 -6.398675303283596E-10 3.513080820941662E-11
peri -2.012974593046602E-13 5.37569765570993E-13 5.13128825063892E-10 -6.398675303283596E-10 7.690105722078275E-10 -3.424181662018797E-11
i -4.931186651932316E-15 1.450828881714619E-14 2.641243845668429E-12 3.513080820941662E-11 -3.424181662018797E-11 2.038901414452537E-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 12.7   n/a MPO412211  
diameter diameter 16.727 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.041   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5102 Benfranklin (1986 RD1)          Discovered 1986-Sep-02 by Mrkos, A. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1986 RD1 = 1930 UA1 = 1939 PB = 1988 AJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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