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 ]  
146268 Jennipolakis (2001 DQ)
Classification: Main-belt Asteroid          SPK-ID: 2146268
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496156247333681 5.2856e-08  
a 2.302484634880555 1.3462e-08 au
q 1.95799695779392 1.2482e-07 au
i 3.327955661276056 7.1782e-06 deg
node 166.3829820342982 9.3266e-05 deg
peri 81.06425937641407 9.6501e-05 deg
M 12.8142282774375 2.5705e-05 deg
tp 2458555.076196801517
(2019-Mar-12.57619680)
9.0989e-05 TDB
period 1276.125943553435
3.49
1.1192e-05
3.064e-08
d
yr
n .2821038172749331 2.4741e-09 deg/d
Q 2.646972311967191 1.5476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      20941 days (57.33 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59255  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-06 07:28:43  

Additional Information
 Earth MOID = .947563 au 
 Jupiter MOID = 2.37784 au 
 T_jup = 3.573 
[ 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 17.2   n/a MPO236915  

146268 Jennipolakis           Discovered 2001 Feb. 16 by D. Healy at Junk Bond Observatory.
Jennifer Polakis (b. 1959) is an American amateur astronomer, eclipse chaser and popularizer of astronomy. She has served as an officer of the Saguaro Astronomy Club of Phoenix, Arizona. She is the wife of professional engineer and amateur astronomer Tom Polakis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 2001 DQ = 1995 SB76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-14 18:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin