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136822 (1997 PW4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2136822
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135898954841988 5.2626e-08  
a 3.983826682020057 5.1979e-08 au
q 3.442428799661906 2.189e-07 au
i 3.317754788455306 6.0513e-06 deg
node 155.4212531393077 9.6747e-05 deg
peri 174.2511597677098 9.9306e-05 deg
M 313.1060645054948 2.5563e-05 deg
tp 2459378.823450329440
(2021-Jun-13.32345033)
0.00021042 TDB
period 2904.350865040047
7.95
5.6842e-05
1.556e-07
d
yr
n .1239519661117239 2.4259e-09 deg/d
Q 4.525224564378207 5.9043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      7942 days (21.74 yr)  
   first obs. used      1997-08-10  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59136  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:21  

Additional Information
 Earth MOID = 2.43148 au 
 Jupiter MOID = .847592 au 
 T_jup = 3.037 
[ 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 14.2   n/a MPO436674  

136822 (1997 PW4)          Discovered 1997-Aug-10 by Galad, A., Pravda, A. at Modra
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1997 PW4 = 2005 QK94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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