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66221 (1999 CH73)
Classification: Main-belt Asteroid          SPK-ID: 2066221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03964642346548473 3.6006e-08  
a 2.229336673638806 7.6997e-09 au
q 2.140951447828587 7.8413e-08 au
i 4.510881494122096 2.8927e-06 deg
node 242.8706062059414 4.8686e-05 deg
peri 260.1684352789026 6.3329e-05 deg
M 205.3285438006379 4.1829e-05 deg
tp 2459722.859612569425
(2022-May-23.35961257)
0.00014216 TDB
period 1215.799379832622
3.33
6.2987e-06
1.724e-08
d
yr
n .296101483494391 1.534e-09 deg/d
Q 2.317721899449026 8.0049e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1745  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50441  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:20  

Additional Information
 Earth MOID = 1.15839 au 
 Jupiter MOID = 2.67863 au 
 T_jup = 3.638 
[ 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 15.12   n/a E2021B10  
diameter diameter 3.347 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.83415 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.173   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66221 (1999 CH73)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CH73 = 1999 AB39 = 2000 NN28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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