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 ]  
20650 (1999 TG173)
Classification: Main-belt Asteroid          SPK-ID: 2020650
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612045648853876 4.0585e-08  
a 2.673379587856105 9.5128e-09 au
q 2.242418594622285 1.0629e-07 au
i 4.489759704365343 4.2561e-06 deg
node 160.6184589156123 3.9117e-05 deg
peri 39.44824123203021 4.0377e-05 deg
M 191.6720322084012 1.0383e-05 deg
tp 2460143.022923188598
(2023-Jul-17.52292319)
4.7494e-05 TDB
period 1596.575161417166
4.37
8.5217e-06
2.333e-08
d
yr
n .2254826510519265 1.2035e-09 deg/d
Q 3.104340581089926 1.1046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      16748 days (45.85 yr)  
   first obs. used      1975-03-14  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:06  

Additional Information
 Earth MOID = 1.24312 au 
 Jupiter MOID = 1.85206 au 
 T_jup = 3.357 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457270.5 (2015-Sep-05.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594383002184871 4.0673e-08  
q 2.248929458373125 1.0639e-07 au
tp 2456947.277799602829
(2014-Oct-16.77779960)
4.4224e-05 TDB
node 160.7014772237642 3.9172e-05 deg
peri 39.48006605216921 4.0453e-05 deg
i 4.484714918341165 4.2523e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      16748 days (45.85 yr)  
   first obs. used      1975-03-14  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47474  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:06  

Additional Information
 Jupiter MOID = 1.85206 au 
 T_jup = 3.357 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.654253596593262E-15 -4.316173040636472E-15 -4.101673506522246E-13 2.013837242302369E-15 -1.338965970226581E-13 -1.942392240383807E-15
q -4.316173040636472E-15 1.131976604079941E-14 1.105121605298169E-12 -4.792204526170994E-15 3.584939373309512E-13 5.122527238317379E-15
tp -4.101673506522246E-13 1.105121605298169E-12 1.95577996911875E-9 2.377398010187104E-12 4.530097645315644E-10 3.164840773588591E-13
node 2.013837242302369E-15 -4.792204526170994E-15 2.377398010187104E-12 1.534432698901183E-9 -1.528858591550758E-9 2.942488329026666E-11
peri -1.338965970226581E-13 3.584939373309512E-13 4.530097645315644E-10 -1.528858591550758E-9 1.636445813600204E-9 -2.9230530918749E-11
i -1.942392240383807E-15 5.122527238317379E-15 3.164840773588591E-13 2.942488329026666E-11 -2.9230530918749E-11 1.808178498736557E-11

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 13.87   n/a E2021B10  
diameter diameter 4.516 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.262   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20650 (1999 TG173)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TG173 = 1975 EH3 = 1998 OO11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-27 23:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin