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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567145459594105 2.6905e-08  
a 2.250968470663451 5.7473e-09 au
q 1.898208968814479 5.983e-08 au
i 2.468582402625248 3.5015e-06 deg
node 225.4690225636382 7.0793e-05 deg
peri 77.93544752954723 7.1736e-05 deg
M 117.0258879880115 1.1572e-05 deg
tp 2458599.511433958635
(2019-Apr-26.01143396)
3.9505e-05 TDB
period 1233.538033821028
3.38
4.7243e-06
1.293e-08
d
yr
n .2918434536508438 1.1177e-09 deg/d
Q 2.603727972512422 6.648e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2327  
   data-arc span      26054 days (71.33 yr)  
   first obs. used      1948-09-07  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47605  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:44:08  

Additional Information
 Earth MOID = .884812 au 
 Jupiter MOID = 2.61032 au 
 T_jup = 3.610 
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Orbital Elements at Epoch 2456687.5 (2014-Jan-30.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1562107815884147 2.6809e-08  
q 1.900322410637866 5.9572e-08 au
tp 2456131.959436456926
(2012-Jul-23.45943646)
4.0283e-05 TDB
node 225.5598926340727 7.0783e-05 deg
peri 77.81742698905937 7.1741e-05 deg
i 2.467948247464394 3.5014e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2327  
   data-arc span      26054 days (71.33 yr)  
   first obs. used      1948-09-07  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47605  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:44:08  

Additional Information
 Jupiter MOID = 2.61032 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.187449431221585E-16 -1.591912361934851E-15 1.780744782477342E-13 -2.649823373076847E-17 4.560294085042534E-14 -1.833219378881345E-16
q -1.591912361934851E-15 3.548858348653476E-15 -4.335235294627114E-13 5.295407114335509E-16 -1.100456504040328E-13 3.755505418792372E-16
tp 1.780744782477342E-13 -4.335235294627114E-13 1.622705825290784E-9 2.253994191198109E-12 4.776718061290521E-10 -3.768072166444234E-13
node -2.649823373076847E-17 5.295407114335509E-16 2.253994191198109E-12 5.010281030043733E-9 -5.004615611297209E-9 -5.499999383308026E-11
peri 4.560294085042534E-14 -1.100456504040328E-13 4.776718061290521E-10 -5.004615611297209E-9 5.146768202940689E-9 5.484256286263708E-11
i -1.833219378881345E-16 3.755505418792372E-16 -3.768072166444234E-13 -5.499999383308026E-11 5.484256286263708E-11 1.225978034256691E-11

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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