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JPL Small-Body Database Browser
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8185 (1992 WR2)
Classification: Main-belt Asteroid          SPK-ID: 2008185
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01899970642634832 3.0139e-08  
a 2.857238137232856 1.3739e-08 au
q 2.802951451435266 8.9256e-08 au
i 3.075347718136526 3.4006e-06 deg
node 67.02391993702257 6.0809e-05 deg
peri 192.2881124560131 0.00011346 deg
M 53.23700017755746 9.4386e-05 deg
tp 2458739.626983994114
(2019-Sep-13.12698399)
0.00046291 TDB
period 1764.079220258343
4.83
1.2724e-05
3.484e-08
d
yr
n .2040724678720943 1.4719e-09 deg/d
Q 2.911524823030447 1.4e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2267  
   data-arc span      14410 days (39.45 yr)  
   first obs. used      1980-03-15  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:48:10  

Additional Information
 Earth MOID = 1.78764 au 
 Jupiter MOID = 2.07224 au 
 T_jup = 3.301 
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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 12.8   n/a MPO435777  
diameter diameter 6.752 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.322   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8185 (1992 WR2)          Discovered 1992-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1992 WR2 = 1980 EV1 = 1984 BS7 = 1995 MH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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