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56227 (1999 JT23)
Classification: Main-belt Asteroid          SPK-ID: 2056227
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06601050062330897 4.3187e-08  
a 2.743155445398227 1.3705e-08 au
q 2.562078381159933 1.1947e-07 au
i 4.657569490750764 5.0422e-06 deg
node 220.6410892697918 5.0019e-05 deg
peri 184.151180289359 6.1041e-05 deg
M 43.81266042911878 3.4188e-05 deg
tp 2458798.537294847319
(2019-Nov-11.03729485)
0.00015738 TDB
period 1659.487763191004
4.54
1.2437e-05
3.405e-08
d
yr
n .2169344107170525 1.6258e-09 deg/d
Q 2.92423250963652 1.461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1369  
   data-arc span      9898 days (27.10 yr)  
   first obs. used      1992-12-23  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:44:52  

Additional Information
 Earth MOID = 1.57096 au 
 Jupiter MOID = 2.35532 au 
 T_jup = 3.341 
[ 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 MPO309577  
diameter diameter 7.295 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 33.911 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 0.076   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

56227 (1999 JT23)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JT23 = 2000 OP9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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