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6863 (1991 PX8)
Classification: Main-belt Asteroid          SPK-ID: 2006863
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07699392986057242 3.1204e-08  
a 2.296340375538544 6.6902e-09 au
q 2.119536105728329 7.3629e-08 au
i 4.183482999983173 3.2997e-06 deg
node 251.3170184154774 5.7481e-05 deg
peri 167.6719107781185 6.5065e-05 deg
M 8.676049781817211 2.9777e-05 deg
tp 2458969.868211537013
(2020-Apr-30.36821154)
0.00010511 TDB
period 1271.021273965722
3.48
5.5545e-06
1.521e-08
d
yr
n .2832368012824534 1.2378e-09 deg/d
Q 2.473144645348759 7.2053e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2128  
   data-arc span      22937 days (62.80 yr)  
   first obs. used      1958-01-12  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:32:30  

Additional Information
 Earth MOID = 1.1321 au 
 Jupiter MOID = 2.7476 au 
 T_jup = 3.587 
[ 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 13.8   n/a MPO395065  
diameter diameter 3.753 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.401   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6863 (1991 PX8)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 PX8 = 1958 AJ = 1991 OM = 1995 TQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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