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 ]  
91807 (1999 TU245)
Classification: Main-belt Asteroid          SPK-ID: 2091807
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1241392188759143 4.21e-08  
a 3.145572528443748 2.7857e-08 au
q 2.755083611845207 1.3861e-07 au
i 11.26829079886492 4.7202e-06 deg
node 88.15770479977692 2.3534e-05 deg
peri 277.8760533476234 3.0154e-05 deg
M 277.1167470212761 2.0943e-05 deg
tp 2459469.650592191072
(2021-Sep-12.15059219)
0.00012201 TDB
period 2037.736299179052
5.58
2.7069e-05
7.411e-08
d
yr
n .1766666276421704 2.3469e-09 deg/d
Q 3.53606144504229 3.1316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      696  
   data-arc span      7209 days (19.74 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:37:27  

Additional Information
 Earth MOID = 1.78331 au 
 Jupiter MOID = 2.04413 au 
 T_jup = 3.167 
[ 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 14.3   n/a MPO299534  
diameter diameter 7.364 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.024   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

91807 (1999 TU245)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-25 22:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin