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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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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132742906622881 3.3717e-08  
a 3.166927492482708 1.5709e-08 au
q 2.746540332066641 1.085e-07 au
i 11.4910098230221 4.2797e-06 deg
node 118.0842091375665 1.8888e-05 deg
peri 261.0045569118716 2.4663e-05 deg
M 76.99479453576063 1.6179e-05 deg
tp 2458560.234686411632
(2019-Mar-17.73468641)
9.2059e-05 TDB
period 2058.522447490893
5.64
1.5316e-05
4.193e-08
d
yr
n .1748827176690735 1.3012e-09 deg/d
Q 3.587314652898774 1.7794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3036  
   data-arc span      28772 days (78.77 yr)  
   first obs. used      1942-01-21  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40839  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:10:34  

Additional Information
 Earth MOID = 1.77819 au 
 Jupiter MOID = 2.00909 au 
 T_jup = 3.159 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456695.5 (2014-Feb-07.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1268574950689557 3.3159e-08  
q 2.765983918686589 1.0561e-07 au
tp 2456491.620314657548
(2013-Jul-18.12031466)
9.8076e-05 TDB
node 118.303896552219 1.8786e-05 deg
peri 259.5571322500421 2.5346e-05 deg
i 11.51603048343674 4.2894e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3036  
   data-arc span      28772 days (78.77 yr)  
   first obs. used      1942-01-21  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40839  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:10:34  

Additional Information
 Jupiter MOID = 2.00909 au 
 T_jup = 3.159 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.099496673713526E-15 -3.472376741599901E-15 -1.363434992233297E-13 -1.332866657213742E-15 -3.845251028577676E-14 1.37540607814511E-15
q -3.472376741599901E-15 1.115348759659873E-14 3.915693978049327E-13 4.3892271580426E-15 1.170096654515414E-13 -3.379526083736472E-15
tp -1.363434992233297E-13 3.915693978049327E-13 9.61881907840337E-9 -1.319022834422183E-11 1.68714108807146E-9 -3.825882803959986E-12
node -1.332866657213742E-15 4.3892271580426E-15 -1.319022834422183E-11 3.52902971901687E-10 -3.477478346097465E-10 3.341200768781002E-12
peri -3.845251028577676E-14 1.170096654515414E-13 1.68714108807146E-9 -3.477478346097465E-10 6.424417025766673E-10 -3.872735608433115E-12
i 1.37540607814511E-15 -3.379526083736472E-15 -3.825882803959986E-12 3.341200768781002E-12 -3.872735608433115E-12 1.83989717637574E-11

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-August); 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

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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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