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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262960651095418 4.1425e-08  
a 2.355880663889433 1.169e-08 au
q 2.058342206172542 9.865e-08 au
i 18.18550089292477 5.2078e-06 deg
node 299.3233538166505 1.3946e-05 deg
peri 265.0357504124025 2.4082e-05 deg
M 40.42876513301654 2.0489e-05 deg
tp 2458852.174324814330
(2020-Jan-03.67432481)
7.4996e-05 TDB
period 1320.773535653546
3.62
9.8304e-06
2.691e-08
d
yr
n .2725675449136438 2.0287e-09 deg/d
Q 2.653419121606323 1.3166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1485  
   data-arc span      13542 days (37.08 yr)  
   first obs. used      1982-12-22  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41215  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:44:13  

Additional Information
 Earth MOID = 1.148 au 
 Jupiter MOID = 2.56749 au 
 T_jup = 3.477 
[ 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 13.3   n/a MPO381418  
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. 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:
[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

[ show close-approach data ]
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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