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JPL Small-Body Database Browser
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4842 Atsushi (1989 WK)
Classification: Main-belt Asteroid          SPK-ID: 2004842
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567995016146411 2.7542e-08  
a 2.250779443490108 5.9516e-09 au
q 1.89785834850638 6.154e-08 au
i 2.468765535782565 3.5122e-06 deg
node 225.4695266927604 7.4441e-05 deg
peri 77.85933808787033 7.5344e-05 deg
M .3408229800112473 1.1634e-05 deg
tp 2458599.332319021520
(2019-Apr-25.83231902)
3.9858e-05 TDB
period 1233.382655825622
3.38
4.8921e-06
1.339e-08
d
yr
n .2918802192487596 1.1577e-09 deg/d
Q 2.603700538473837 6.8848e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      26013 days (71.22 yr)  
   first obs. used      1948-09-07  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48026  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:08:30  

Additional Information
 Earth MOID = .883685 au 
 Jupiter MOID = 2.60862 au 
 T_jup = 3.610 
[ show covariance matrix ]

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 13.5   n/a MPO337293  
diameter diameter 4.596 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.400   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4842 Atsushi (1989 WK)          Discovered 1989-Nov-21 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1989 WK = 1948 RE = 1962 XF1 = 1979 YF5 = 1985 OG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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