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 ]  
18766 Broderick (1999 JA22)
Classification: Main-belt Asteroid          SPK-ID: 2018766
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1084120767985592 3.2448e-08  
a 2.53329644061529 8.6972e-09 au
q 2.258656512341789 8.3004e-08 au
i 1.090304100906658 3.4936e-06 deg
node 289.8034241694261 0.00026003 deg
peri 2.8703043928848 0.00026136 deg
M 114.4174297572322 2.6175e-05 deg
tp 2458928.423181588241
(2020-Mar-19.92318159)
0.00010781 TDB
period 1472.744624536386
4.03
7.5842e-06
2.076e-08
d
yr
n .2444415644112953 1.2588e-09 deg/d
Q 2.807936368888792 9.64e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1537  
   data-arc span      9893 days (27.09 yr)  
   first obs. used      1994-01-07  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:03:43  

Additional Information
 Earth MOID = 1.24211 au 
 Jupiter MOID = 2.33776 au 
 T_jup = 3.441 
[ 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 14.94   n/a E2021B10  
diameter diameter 3.480 km 0.765 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.152 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.]
geometric albedo albedo 0.146   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18766 Broderick           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Tamara Ann Broderick (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her earth and space sciences project. She attends the Laurel School, Shaker Heights, Ohio, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 1999 JA22 = 1996 TZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 16:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin