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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
90643 (5166 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2090643
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130051764146904 6.2943e-08  
a 3.006127074166797 2.2056e-08 au
q 2.666419153825601 1.8074e-07 au
i 9.734958985320542 5.4528e-06 deg
node 321.9698144820526 3.4241e-05 deg
peri 346.2994295910403 4.4854e-05 deg
M 104.2805382835713 2.9604e-05 deg
tp 2458845.044855104541
(2019-Dec-27.54485510)
0.00015577 TDB
period 1903.74786542161
5.21
2.0952e-05
5.736e-08
d
yr
n .1891006716481719 2.0811e-09 deg/d
Q 3.345834994507993 2.4548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      705  
   data-arc span      17280 days (47.31 yr)  
   first obs. used      1973-09-20  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:41:11  

Additional Information
 Earth MOID = 1.65252 au 
 Jupiter MOID = 1.93467 au 
 T_jup = 3.220 
[ 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 14.87   n/a E2021B10  

90643 (5166 T-2)          Discovered 1973-Sep-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 5166 T-2 = 2002 EQ57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-25 15:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin