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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06568898669315006 4.3287e-08  
a 2.742262330100143 1.3902e-08 au
q 2.562125896389068 1.1987e-07 au
i 4.658253239389391 5.0738e-06 deg
node 220.6426963450613 5.0792e-05 deg
peri 184.232355737524 6.1966e-05 deg
M 316.9454586570044 3.478e-05 deg
tp 2458798.871094725880
(2019-Nov-11.37109473)
0.00016048 TDB
period 1658.677386257533
4.54
1.2613e-05
3.453e-08
d
yr
n .2170403979596457 1.6504e-09 deg/d
Q 2.922398763811217 1.4815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      9842 days (26.95 yr)  
   first obs. used      1992-12-23  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52923  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:41:57  

Additional Information
 Earth MOID = 1.57046 au 
 Jupiter MOID = 2.35714 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-January); 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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