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19339 (1997 AF4)
Classification: Main-belt Asteroid          SPK-ID: 2019339
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605642995884431 3.4027e-08  
a 2.772400882404696 1.2543e-08 au
q 2.327252276543004 9.6232e-08 au
i 8.8830046530747 3.8407e-06 deg
node 130.8729587725684 2.8092e-05 deg
peri 12.27951198303757 3.1591e-05 deg
M 10.12533886491199 1.3712e-05 deg
tp 2458953.076944178532
(2020-Apr-13.57694418)
6.4171e-05 TDB
period 1686.096665356085
4.62
1.1442e-05
3.133e-08
d
yr
n .2135108902098279 1.4489e-09 deg/d
Q 3.217549488266387 1.4557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1890  
   data-arc span      14892 days (40.77 yr)  
   first obs. used      1979-04-28  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4708  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:46:09  

Additional Information
 Earth MOID = 1.34094 au 
 Jupiter MOID = 1.80667 au 
 T_jup = 3.300 
[ 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 MPO365484  
diameter diameter 8.985 km 2.922 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.038   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

19339 (1997 AF4)          Discovered 1997-Jan-06 by Kobayashi, T. at Oizumi
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AF4 = 1979 HW5 = 1998 MD19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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