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2685 Masursky (1981 JN)
Classification: Main-belt Asteroid          SPK-ID: 2002685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110484535443005 3.231e-08  
a 2.568039298462276 1.0676e-08 au
q 2.28286250572705 8.1991e-08 au
i 12.12495111815807 3.3359e-06 deg
node 215.3354073187214 1.6648e-05 deg
peri 288.1654826857313 2.3686e-05 deg
M 246.7741505984987 1.8978e-05 deg
tp 2459473.263578818958
(2021-Sep-15.76357882)
8.0234e-05 TDB
period 1503.14516759605
4.12
9.373e-06
2.566e-08
d
yr
n .2394978261319502 1.4934e-09 deg/d
Q 2.853216091197502 1.1861e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2446  
   data-arc span      17139 days (46.92 yr)  
   first obs. used      1973-08-28  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4171  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:55:39  

Additional Information
 Earth MOID = 1.32655 au 
 Jupiter MOID = 2.23971 au 
 T_jup = 3.391 
[ 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 12.1   n/a MPO395019  
diameter diameter 10.744 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.114   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2685 Masursky (1981 JN)          Discovered 1981-May-03 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 JN = 1950 VO = 1973 QF = 1975 XJ5 = 1977 KU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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