Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
91734 (1999 TM166)
Classification: Main-belt Asteroid          SPK-ID: 2091734
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05560391317107118 3.9902e-08  
a 3.112329120223406 2.2896e-08 au
q 2.939271442062708 1.2465e-07 au
i 9.901529877177346 4.2639e-06 deg
node 240.4923868218065 2.5064e-05 deg
peri 197.1444680107744 5.3274e-05 deg
M 221.7779275592972 4.9607e-05 deg
tp 2459770.519282429508
(2022-Jul-10.01928243)
0.00028106 TDB
period 2005.518632297636
5.49
2.213e-05
6.059e-08
d
yr
n .179504689810617 1.9808e-09 deg/d
Q 3.285386798384105 2.4169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1049  
   data-arc span      7634 days (20.90 yr)  
   first obs. used      1999-09-06  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52006  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:19:20  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-30 07:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin