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 ]  
7326 Tedbunch (1981 UK22)
Classification: Main-belt Asteroid          SPK-ID: 2007326
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .209116939433915 4.1357e-08  
a 2.404546817990998 7.1437e-09 au
q 1.901715346687161 9.9032e-08 au
i 11.0133019112956 4.1346e-06 deg
node 206.8686219634415 2.0745e-05 deg
peri 143.2986423615872 2.2126e-05 deg
M 160.6991547762995 8.0949e-06 deg
tp 2458392.561881815712
(2018-Oct-01.06188182)
2.9949e-05 TDB
period 1361.909605878162
3.73
6.0692e-06
1.662e-08
d
yr
n .2643347241595168 1.178e-09 deg/d
Q 2.907378289294834 8.6376e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      13982 days (38.28 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51749  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:26:56  

Additional Information
 Earth MOID = .909378 au 
 Jupiter MOID = 2.59075 au 
 T_jup = 3.469 
[ 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 14.1   n/a MPO452272  
diameter diameter 4.524 km 0.230 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 76.40 h n/a LCDB (Rev. 2019-August); 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.217   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7326 Tedbunch           Discovered 1981 Oct. 24 by S. J. Bus at Palomar.
Theodore E. Bunch (b. 1936) is a meteoriticist at Northern Arizona University. He has used petrologic studies of a broad array of meteorites to understand the metamorphism and differentiation of minor planets and the moon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1981 UK22 = 1991 GQ5 = 1992 SW24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-28 19:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin