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JPL Small-Body Database Browser
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66958 (1999 XO23)
Classification: Main-belt Asteroid          SPK-ID: 2066958
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262228997066545 5.0473e-08  
a 2.812552008456645 1.979e-08 au
q 2.457543538373473 1.3649e-07 au
i 7.765737325847453 5.0533e-06 deg
node 215.208718468334 3.5725e-05 deg
peri 110.7046589540491 4.3732e-05 deg
M 193.1504289250722 3.0395e-05 deg
tp 2459798.994379609635
(2022-Aug-07.49437961)
0.00015061 TDB
period 1722.857150950533
4.72
1.8184e-05
4.979e-08
d
yr
n .2089552228989972 2.2054e-09 deg/d
Q 3.167560478539818 2.2288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      7422 days (20.32 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:06:41  

Additional Information
 Earth MOID = 1.4597 au 
 Jupiter MOID = 2.19607 au 
 T_jup = 3.295 
[ 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 14.8   n/a MPO502576  
diameter diameter 6.266 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.370 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.071   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66958 (1999 XO23)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XO23 = 2001 BY19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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