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 ]  
74871 (1999 TT97)
Classification: Main-belt Asteroid          SPK-ID: 2074871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391028751900615 4.4635e-08  
a 2.389508957470913 1.5012e-08 au
q 2.057121391194303 1.0288e-07 au
i 6.165826571535702 3.8878e-06 deg
node 156.5099769571106 4.7783e-05 deg
peri 200.8508189329602 5.1102e-05 deg
M 120.0215457863284 2.1188e-05 deg
tp 2458150.701361761384
(2018-Feb-01.20136176)
7.7115e-05 TDB
period 1349.153676575517
3.69
1.2714e-05
3.481e-08
d
yr
n .2668339465328874 2.5145e-09 deg/d
Q 2.721896523747524 1.71e-08 au
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      9031 days (24.73 yr)  
   first obs. used      1994-04-10  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56034  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:43:48  

Additional Information
 Earth MOID = 1.05294 au 
 Jupiter MOID = 2.71057 au 
 T_jup = 3.512 
[ 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 15.8   n/a MPO453162  
diameter diameter 1.602 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.361   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74871 (1999 TT97)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TT97 = 2001 DR72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-13 21:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin