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 ]  
91720 (1999 TJ156)
Classification: Main-belt Asteroid          SPK-ID: 2091720
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .113320258158352 4.0881e-08  
a 3.180367870551117 2.3131e-08 au
q 2.819967762421736 1.2669e-07 au
i 6.442193810612321 4.8258e-06 deg
node 86.63682923614648 4.6512e-05 deg
peri 23.93898000873589 5.3014e-05 deg
M 179.0827874540368 2.5839e-05 deg
tp 2457969.957735318400
(2017-Aug-04.45773532)
0.00014676 TDB
period 2071.640834720618
5.67
2.2601e-05
6.188e-08
d
yr
n .1737752963575608 1.8959e-09 deg/d
Q 3.540767978680498 2.5753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      7231 days (19.80 yr)  
   first obs. used      1999-10-07  
   last obs. used      2019-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:36:18  

Additional Information
 Earth MOID = 1.83819 au 
 Jupiter MOID = 1.59045 au 
 T_jup = 3.180 
[ 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 13.7   n/a MPO359385  
diameter diameter 8.828 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.099   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91720 (1999 TJ156)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TJ156 = 2000 AY99 = 2001 CZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-31 06:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin