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6840 (1995 WW5)
Classification: Main-belt Asteroid          SPK-ID: 2006840
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1530565138701975 3.8589e-08  
a 2.428838918760578 8.6818e-09 au
q 2.057089301102824 9.3305e-08 au
i 3.36223988750511 3.4281e-06 deg
node 126.0601968152739 7.2371e-05 deg
peri 296.4428974827234 7.3462e-05 deg
M 58.68689218503089 1.1906e-05 deg
tp 2458375.109759151823
(2018-Sep-13.60975915)
4.5517e-05 TDB
period 1382.59982228263
3.79
7.4131e-06
2.03e-08
d
yr
n .2603790295630524 1.3961e-09 deg/d
Q 2.800588536418332 1.0011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1856  
   data-arc span      23988 days (65.68 yr)  
   first obs. used      1953-09-17  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48631  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:46:57  

Additional Information
 Earth MOID = 1.07253 au 
 Jupiter MOID = 2.50435 au 
 T_jup = 3.490 
[ 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 14.4   n/a MPO425874  
diameter diameter 8.560 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 482.274 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.043   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6840 (1995 WW5)          Discovered 1995-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1995 WW5 = 1953 SR = 1980 WM2 = 1989 CP8 = 1991 RM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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