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19237 (1994 AP)
Classification: Main-belt Asteroid          SPK-ID: 2019237
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0812964336276982 3.568e-08  
a 2.313068545608985 8.4607e-09 au
q 2.125024322114568 8.1684e-08 au
i 7.107587632202779 3.6876e-06 deg
node 84.43313010324914 4.169e-05 deg
peri 42.67874071669707 5.3348e-05 deg
M 166.0181987095933 3.3841e-05 deg
tp 2458407.937208067431
(2018-Oct-16.43720807)
0.00012019 TDB
period 1284.935065877196
3.52
7.05e-06
1.93e-08
d
yr
n .2801697996732902 1.5372e-09 deg/d
Q 2.501112769103402 9.1485e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1606  
   data-arc span      9259 days (25.35 yr)  
   first obs. used      1994-01-04  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45041  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:41:34  

Additional Information
 Earth MOID = 1.14662 au 
 Jupiter MOID = 2.54857 au 
 T_jup = 3.568 
[ 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 14.2   n/a MPO474020  
diameter diameter 4.223 km 0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 64.951 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 0.299   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19237 (1994 AP)          Discovered 1994-Jan-04 by Kobayashi, T. at Oizumi
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 AP = 1999 NT41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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