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 ]  
2320 Blarney (1979 QJ)
Classification: Main-belt Asteroid          SPK-ID: 2002320
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1324195629788587 3.7194e-08  
a 3.166084355369558 1.7452e-08 au
q 2.746832848677319 1.2228e-07 au
i 11.49018614645662 4.4664e-06 deg
node 118.0887935635322 2.0404e-05 deg
peri 260.9964092631272 2.627e-05 deg
M 7.057199106964115 1.7494e-05 deg
tp 2458560.162217563177
(2019-Mar-17.66221756)
9.9906e-05 TDB
period 2057.700435704898
5.63
1.7014e-05
4.658e-08
d
yr
n .1749525799544657 1.4466e-09 deg/d
Q 3.585335862061796 1.9763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2706  
   data-arc span      28407 days (77.77 yr)  
   first obs. used      1942-01-21  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42792  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:14:35  

Additional Information
 Earth MOID = 1.77771 au 
 Jupiter MOID = 2.00707 au 
 T_jup = 3.159 
[ 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 10.5   n/a MPO337266  
diameter diameter 35.739 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.097 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Bennefeld, C.; Aguilar, V.; Cooper, T.; Hupp, W.; et al. (2009) Minor Planet Bull. 36, 123-124.]
geometric albedo albedo 0.096   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2320 Blarney (1979 QJ)          Discovered 1979-Aug-29 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 QJ = 1929 WF1 = 1931 DP = 1942 CE = 1950 NF1 = 1951 VG = 1955 ME = 1968 UE3 = 1972 LN = 1975 AQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin