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JPL Small-Body Database Browser
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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 ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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 ]
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