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20137 (1996 PX8)
Classification: Mars-crossing Asteroid          SPK-ID: 2020137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3031830819948654 4.4458e-08  
a 2.29145227386595 6.2627e-09 au
q 1.596722711231129 1.0166e-07 au
i 5.865769406779918 4.1074e-06 deg
node 150.5787716911172 4.0565e-05 deg
peri 253.5534977571985 4.1233e-05 deg
M 263.3061549208429 5.4691e-06 deg
tp 2459340.799241403878
(2021-May-06.29924140)
1.9477e-05 TDB
period 1266.9650979864
3.47
5.1941e-06
1.422e-08
d
yr
n .2841435810443014 1.1649e-09 deg/d
Q 2.98618183650077 8.1615e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1381  
   data-arc span      9682 days (26.51 yr)  
   first obs. used      1994-01-17  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4958  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:04:34  

Additional Information
 Earth MOID = .617869 au 
 Jupiter MOID = 2.44798 au 
 T_jup = 3.529 
[ 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 15.3   n/a MPO381425  
rotation period rot_per 11.16 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

20137 (1996 PX8)          Discovered 1996-Aug-08 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 PX8 = 1994 BA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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