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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1942258586705317 1.9188e-08  
a 2.801912542597618 9.5957e-09 au
q 2.257708673091863 5.1667e-08 au
i 8.103677799239987 1.2938e-06 deg
node 317.2459488776374 5.147e-06 deg
peri 53.19566315831098 1.0995e-05 deg
M 92.66082956236725 7.5319e-06 deg
tp 2458759.565609193072
(2019-Oct-03.06560919)
3.574e-05 TDB
period 1713.090433575855
4.69
8.8002e-06
2.409e-08
d
yr
n .2101465240504242 1.0795e-09 deg/d
Q 3.346116412103373 1.1459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2665  
   data-arc span      29794 days (81.57 yr)  
   first obs. used      1939-08-08  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:18:15  

Additional Information
 Earth MOID = 1.2661 au 
 Jupiter MOID = 2.18143 au 
 T_jup = 3.282 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457216.5 (2015-Jul-13.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1958528632811279 2.0275e-08  
q 2.251255407129442 5.5284e-08 au
tp 2457040.572491001363
(2015-Jan-18.07249100)
3.5142e-05 TDB
node 317.6398341656479 5.1381e-06 deg
peri 51.69835794260821 1.0794e-05 deg
i 8.124032296032318 1.2941e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2665  
   data-arc span      29794 days (81.57 yr)  
   first obs. used      1939-08-08  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:18:15  

Additional Information
 Jupiter MOID = 2.18143 au 
 T_jup = 3.282 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.110865674974843E-16 -1.111199530320363E-15 -6.263988683364606E-13 1.760944286227092E-14 -1.862617387620849E-13 -1.360271883499048E-14
q -1.111199530320363E-15 3.056336115616152E-15 1.71504909765353E-12 -4.978856808140015E-14 5.122157367093889E-13 3.756117129819399E-14
tp -6.263988683364606E-13 1.71504909765353E-12 1.234981877379464E-9 -3.849874383467508E-12 3.282757355944506E-10 1.769750042517484E-11
node 1.760944286227092E-14 -4.978856808140015E-14 -3.849874383467508E-12 2.640044867373104E-11 -2.846200148331972E-11 -1.31975130600364E-12
peri -1.862617387620849E-13 5.122157367093889E-13 3.282757355944506E-10 -2.846200148331972E-11 1.165108190522361E-10 6.148297023935454E-12
i -1.360271883499048E-14 3.756117129819399E-14 1.769750042517484E-11 -1.31975130600364E-12 6.148297023935454E-12 1.674599891936487E-12

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 12.79   n/a E2021B10  
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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