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JPL Small-Body Database Browser
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91734 (1999 TM166)
Classification: Main-belt Asteroid          SPK-ID: 2091734
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05560388938165205 4.6291e-08  
a 3.112329114253363 2.5641e-08 au
q 2.939271510465124 1.4352e-07 au
i 9.901530521649935 5.0656e-06 deg
node 240.4923930607055 3.3554e-05 deg
peri 197.1444306818703 6.8988e-05 deg
M 221.7779582332961 5.9877e-05 deg
tp 2459770.519109332619
(2022-Jul-10.01910933)
0.00033559 TDB
period 2005.518626527183
5.49
2.4784e-05
6.785e-08
d
yr
n .1795046903271036 2.2183e-09 deg/d
Q 3.285386718041602 2.7067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      7185 days (19.67 yr)  
   first obs. used      1999-09-06  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5486  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:33  

Additional Information
 Earth MOID = 1.95564 au 
 Jupiter MOID = 1.98634 au 
 T_jup = 3.193 
[ 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 14.1   n/a MPO439645  
diameter diameter 5.835 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.201 h n/a LCDB (Rev. 2019-August); 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 0.157   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91734 (1999 TM166)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TM166 = 1999 US47 = 2000 WO48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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