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66732 (1999 TW111)
Classification: Main-belt Asteroid          SPK-ID: 2066732
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2278700223464442 4.9762e-08  
a 2.582146326275141 1.2498e-08 au
q 1.993752585205036 1.3489e-07 au
i 1.992543314944152 4.034e-06 deg
node 273.4164813057849 0.00010509 deg
peri 168.2129630773393 0.00010553 deg
M 344.1614543594287 7.3045e-06 deg
tp 2459267.177990162053
(2021-Feb-21.67799016)
3.0741e-05 TDB
period 1515.548018301075
4.15
1.1003e-05
3.012e-08
d
yr
n .2375378382293416 1.7245e-09 deg/d
Q 3.170540067345246 1.5346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1065  
   data-arc span      13530 days (37.04 yr)  
   first obs. used      1984-01-25  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:37  

Additional Information
 Earth MOID = 1.00931 au 
 Jupiter MOID = 2.08095 au 
 T_jup = 3.386 
[ 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 15.72   n/a E2021B10  
diameter diameter 5.243 km 0.375 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.55 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.044   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66732 (1999 TW111)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TW111 = 1984 BB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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