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6115 Martinduncan (1984 SR2)
Classification: Main-belt Asteroid          SPK-ID: 2006115
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553168144067453 3.7784e-08  
a 2.226262464634795 7.5198e-09 au
q 1.880486470594409 8.6066e-08 au
i 4.890096660278055 3.8563e-06 deg
node 316.1223628045054 4.343e-05 deg
peri 66.86454575358469 4.4861e-05 deg
M 251.1535426071984 1.2204e-05 deg
tp 2459367.338383374493
(2021-Jun-01.83838337)
4.2009e-05 TDB
period 1213.285403844032
3.32
6.1473e-06
1.683e-08
d
yr
n .2967150176367555 1.5034e-09 deg/d
Q 2.572038458675181 8.6877e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2076  
   data-arc span      13099 days (35.86 yr)  
   first obs. used      1984-09-25  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:36:28  

Additional Information
 Earth MOID = .889734 au 
 Jupiter MOID = 2.90507 au 
 T_jup = 3.625 
[ 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 14.0   n/a MPO473851  
diameter diameter 4.936 km 0.210 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.166   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6115 Martinduncan (1984 SR2)          Discovered 1984-Sep-25 by Skiff, B. A. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 SR2 = 1989 CF8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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