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 ]  
102391 (1999 TH157)
Classification: Main-belt Asteroid          SPK-ID: 2102391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2156288344545209 4.5862e-08  
a 2.590766042270426 1.3064e-08 au
q 2.032122180231302 1.2435e-07 au
i 12.97121860198446 5.8823e-06 deg
node 1.804387463608539 1.9523e-05 deg
peri 114.9212084791994 2.466e-05 deg
M 302.8152023351898 1.7054e-05 deg
tp 2459442.446201926973
(2021-Aug-15.94620193)
7.3296e-05 TDB
period 1523.143147314296
4.17
1.1521e-05
3.154e-08
d
yr
n .2363533595872293 1.7877e-09 deg/d
Q 3.149409904309549 1.5881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      7844 days (21.48 yr)  
   first obs. used      1999-09-04  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53733  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:41:47  

Additional Information
 Earth MOID = 1.08466 au 
 Jupiter MOID = 2.03068 au 
 T_jup = 3.351 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO351575  
diameter diameter 6.483 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102391 (1999 TH157)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 TH157 = 2001 BZ69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 08:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin