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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1327429087237222 3.3968e-08  
a 3.166927491187957 1.5873e-08 au
q 2.746540324290547 1.0954e-07 au
i 11.49100975270255 4.285e-06 deg
node 118.0842098825899 1.9128e-05 deg
peri 261.004557254102 2.4883e-05 deg
M 76.99479388020113 1.6205e-05 deg
tp 2458560.234690430192
(2019-Mar-17.73469043)
9.2229e-05 TDB
period 2058.522446228499
5.64
1.5476e-05
4.237e-08
d
yr
n .1748827177763208 1.3148e-09 deg/d
Q 3.587314658085366 1.798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2963  
   data-arc span      28581 days (78.25 yr)  
   first obs. used      1942-01-21  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:38:16  

Additional Information
 Earth MOID = 1.77819 au 
 Jupiter MOID = 2.00909 au 
 T_jup = 3.159 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456613.5 (2013-Nov-17.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267782696259386 3.3389e-08  
q 2.765842799166872 1.066e-07 au
tp 2456491.382821893285
(2013-Jul-17.88282189)
9.8532e-05 TDB
node 118.3048230871967 1.9026e-05 deg
peri 259.5028143117149 2.5584e-05 deg
i 11.51593252610409 4.2948e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2963  
   data-arc span      28581 days (78.25 yr)  
   first obs. used      1942-01-21  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:38:16  

Additional Information
 Jupiter MOID = 2.00909 au 
 T_jup = 3.159 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.114844323369959E-15 -3.529433168109662E-15 -1.044572845011646E-13 -1.670298306715127E-15 -3.150936102575186E-14 1.343898104675942E-15
q -3.529433168109662E-15 1.136400371404897E-14 2.865810963317698E-13 5.528593405581734E-15 9.354725110803916E-14 -3.225247259723388E-15
tp -1.044572845011646E-13 2.865810963317698E-13 9.708647174248257E-9 -1.228266397098001E-11 1.704538224072667E-9 -4.030779780800207E-12
node -1.670298306715127E-15 5.528593405581734E-15 -1.228266397098001E-11 3.619854440671414E-10 -3.564813858884041E-10 2.771187210510757E-12
peri -3.150936102575186E-14 9.354725110803916E-14 1.704538224072667E-9 -3.564813858884041E-10 6.545576782849762E-10 -3.354851363668332E-12
i 1.343898104675942E-15 -3.225247259723388E-15 -4.030779780800207E-12 2.771187210510757E-12 -3.354851363668332E-12 1.844540716807997E-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

[ 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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