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 ]  
120196 Kevinballou (2004 DR21)
Classification: Main-belt Asteroid          SPK-ID: 2120196
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1619445140995951 4.0767e-08  
a 2.323779165574984 1.1606e-08 au
q 1.947455877731181 9.3158e-08 au
i 8.559169480786663 4.6593e-06 deg
node 191.7306334766376 3.0771e-05 deg
peri 39.17296826794679 3.4706e-05 deg
M 163.3131326268255 1.5643e-05 deg
tp 2458413.538905458523
(2018-Oct-22.03890546)
5.5078e-05 TDB
period 1293.870190572922
3.54
9.693e-06
2.654e-08
d
yr
n .278235021274115 2.0844e-09 deg/d
Q 2.700102453418788 1.3485e-08 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      10250 days (28.06 yr)  
   first obs. used      1991-10-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53163  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 14:10:34  

Additional Information
 Earth MOID = .946342 au 
 Jupiter MOID = 2.29438 au 
 T_jup = 3.543 
[ 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 16.1   n/a MPO436580  

120196 Kevinballou           Discovered 2004 Feb. 17 by the Catalina Sky Survey.
Kevin M. Ballou (b. 1969), an engineer at the NASA Goddard Space Flight Center, contributed to the NASA OSIRIS-REx Asteroid Sample Return Mission as C&DH Electrical Systems Engineer. He has also made contributions to several other programs, including SDO, ISS/ELC and Landsat/TIRS.
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 2016-06-20Last Updated: 2016-06-21

Alternate Designations
 2004 DR21 = 1998 UW45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-29 12:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin