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 ]  
40776 Yeungkwongyu (1999 TA21)
Classification: Main-belt Asteroid          SPK-ID: 2040776
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07668631054746854 3.0672e-08  
a 2.94218301371602 1.1873e-08 au
q 2.716557853438707 9.1019e-08 au
i 3.279651716626951 3.8091e-06 deg
node 344.6693028045102 6.218e-05 deg
peri 95.55857515245218 6.9675e-05 deg
M 23.36386863041752 2.9032e-05 deg
tp 2459080.868593852385
(2020-Aug-19.36859385)
0.00014872 TDB
period 1843.329411511582
5.05
1.1158e-05
3.055e-08
d
yr
n .1952987880255162 1.1821e-09 deg/d
Q 3.167808173993333 1.2783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1742  
   data-arc span      10987 days (30.08 yr)  
   first obs. used      1991-02-20  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50058  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:16:38  

Additional Information
 Earth MOID = 1.73436 au 
 Jupiter MOID = 2.00209 au 
 T_jup = 3.266 
[ 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 14.21   n/a MPCxxxxx  
rotation period rot_per 3.098 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

40776 Yeungkwongyu           Discovered 1999 Oct. 7 by R. A. Tucker at Goodricke-Pigott.
Canadian amateur astronomer William Kwong Yu Yeung (b. 1960), is one of the world's most prolific amateur discoverers of asteroids. He has also found comets and J002E3, believed to be the Apollo 12 S-IVB stage.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-06-09Last Updated: 2017-06-12

Alternate Designations
 1999 TA21 = 1994 UB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-13 17:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin