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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
80168 (1999 TD321)
Classification: Main-belt Asteroid          SPK-ID: 2080168
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630972127927503 5.1259e-08  
a 2.255828779872844 6.9735e-09 au
q 1.887909393337913 1.1586e-07 au
i 6.538371035861214 5.4612e-06 deg
node 195.5514099518383 3.0933e-05 deg
peri 167.8579374678678 3.3812e-05 deg
M 314.0569536592843 1.1325e-05 deg
tp 2458758.433737935562
(2019-Oct-01.93373794)
3.8856e-05 TDB
period 1237.535387513368
3.39
5.7384e-06
1.571e-08
d
yr
n .2909007723192169 1.3489e-09 deg/d
Q 2.623748166407776 8.1109e-09 au
  Orbit Determination Parameters
   # obs. used (total)      843  
   data-arc span      7359 days (20.15 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53466  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:46:06  

Additional Information
 Earth MOID = .885567 au 
 Jupiter MOID = 2.83638 au 
 T_jup = 3.597 
[ 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 15.8   n/a MPO502638  
diameter diameter 1.677 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.396   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

80168 (1999 TD321)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 TD321 = 2001 EG19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 04:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin