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19239 (1994 AM2)
Classification: Main-belt Asteroid          SPK-ID: 2019239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267139612021633 2.4053e-08  
a 2.356548775356639 1.093e-08 au
q 2.057941145265092 5.8327e-08 au
i 18.18555119118857 6.7562e-07 deg
node 299.3222327860879 2.197e-06 deg
peri 265.1092825234956 4.3075e-06 deg
M 94.8169612114737 3.4073e-06 deg
tp 2458852.486085676727
(2020-Jan-03.98608568)
1.1581e-05 TDB
period 1321.335418849279
3.62
9.1925e-06
2.517e-08
d
yr
n .2724516385956836 1.8954e-09 deg/d
Q 2.655156405448185 1.2315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1616  
   data-arc span      13826 days (37.85 yr)  
   first obs. used      1982-12-22  
   last obs. used      2020-10-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:49:29  

Additional Information
 Earth MOID = 1.14699 au 
 Jupiter MOID = 2.56566 au 
 T_jup = 3.476 
[ 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 13.34   n/a E2021B10  
diameter diameter 4.974 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.464 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.450   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19239 (1994 AM2)          Discovered 1994-Jan-07 by Shiozawa, H. at Hidaka
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1994 AM2 = 1982 YO3 = 1999 ST14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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