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66775 (1999 TS220)
Classification: Main-belt Asteroid          SPK-ID: 2066775
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1254671689277232 3.8969e-08  
a 2.769855470344199 1.5926e-08 au
q 2.422329546141145 1.0303e-07 au
i 4.230606556342157 4.3264e-06 deg
node 305.8110166385539 6.6925e-05 deg
peri 168.5144727661277 7.0871e-05 deg
M 132.9324077201576 2.4269e-05 deg
tp 2458578.754773520196
(2019-Apr-05.25477352)
0.00011079 TDB
period 1683.7751258062
4.61
1.4522e-05
3.976e-08
d
yr
n .2138052727365421 1.844e-09 deg/d
Q 3.117381394547253 1.7924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      7584 days (20.76 yr)  
   first obs. used      1999-09-18  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51877  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:53  

Additional Information
 Earth MOID = 1.43883 au 
 Jupiter MOID = 1.97489 au 
 T_jup = 3.322 
[ 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 14.62   n/a E2021B10  
diameter diameter 3.475 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 138.288 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.254   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66775 (1999 TS220)          Discovered 1999-Oct-01 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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