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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05577319197866049 3.8829e-08  
a 3.10601186673693 2.1319e-08 au
q 2.932779670605414 1.2174e-07 au
i 9.896893406253644 4.1142e-06 deg
node 240.3396018691111 2.4244e-05 deg
peri 199.5353315744722 5.1281e-05 deg
M 290.6643943045481 4.8138e-05 deg
tp 2459781.585269311631
(2022-Jul-21.08526931)
0.00026946 TDB
period 1999.415676284783
5.47
2.0585e-05
5.636e-08
d
yr
n .180052604503399 1.8538e-09 deg/d
Q 3.279244062868447 2.2508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1093  
   data-arc span      8008 days (21.92 yr)  
   first obs. used      1999-09-06  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:43  

Additional Information
 Earth MOID = 1.94965 au 
 Jupiter MOID = 1.98943 au 
 T_jup = 3.195 
[ 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 14.06   n/a E2021B10  
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. 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 0.157   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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