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43907 (1995 WX4)
Classification: Main-belt Asteroid          SPK-ID: 2043907
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1935683149328598 3.0561e-08  
a 2.419816647959575 9.0579e-09 au
q 1.951416816967559 7.4833e-08 au
i 4.059699063882325 3.5658e-06 deg
node 225.2579955008333 4.9491e-05 deg
peri 177.5237488161026 5.0622e-05 deg
M 254.8090098331217 1.3376e-05 deg
tp 2459602.242853250718
(2022-Jan-22.74285325)
5.2706e-05 TDB
period 1374.903182685293
3.76
7.7198e-06
2.114e-08
d
yr
n .2618366184132995 1.4702e-09 deg/d
Q 2.888216478951591 1.0811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1256  
   data-arc span      16022 days (43.87 yr)  
   first obs. used      1976-10-26  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:23:53  

Additional Information
 Earth MOID = .959202 au 
 Jupiter MOID = 2.51499 au 
 T_jup = 3.485 
[ 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 15.23   n/a MPCxxxxx  

43907 (1995 WX4)          Discovered 1995-Nov-20 by Kobayashi, T. at Oizumi
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1995 WX4 = 1976 UY1 = 1991 RQ36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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