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JPL Small-Body Database Browser
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17639 (1996 PA4)
Classification: Main-belt Asteroid          SPK-ID: 2017639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1662972113621269 4.1693e-08  
a 2.345051079070688 8.0814e-09 au
q 1.955075624119486 9.6211e-08 au
i 3.130239036077123 3.9291e-06 deg
node 102.6110720900169 8.5434e-05 deg
peri 126.0967305046435 8.6262e-05 deg
M 195.6251100065542 1.3191e-05 deg
tp 2459199.407651404546
(2020-Dec-15.90765140)
4.9022e-05 TDB
period 1311.676950866605
3.59
6.7804e-06
1.856e-08
d
yr
n .2744578226842771 1.4187e-09 deg/d
Q 2.73502653402189 9.4253e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1275  
   data-arc span      8759 days (23.98 yr)  
   first obs. used      1995-01-31  
   last obs. used      2019-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5269  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:22:18  

Additional Information
 Earth MOID = .946887 au 
 Jupiter MOID = 2.2535 au 
 T_jup = 3.541 
[ 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 14.9   n/a MPO358801  
diameter diameter 2.867 km 0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17639 (1996 PA4)          Discovered 1996-Aug-09 by JPL/GEODSS NEAT at Haleakala
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 PA4 = 1999 GT2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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