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11254 Konkohekisui (1977 DL2)
Classification: Main-belt Asteroid          SPK-ID: 2011254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809469416738896 2.9174e-08  
a 2.458926011949161 6.8658e-09 au
q 2.013990870284586 7.1339e-08 au
i 5.59876224574209 2.5355e-06 deg
node 140.7657953177895 4.1225e-05 deg
peri 314.0997895108009 4.2324e-05 deg
M 175.0893861619947 1.019e-05 deg
tp 2458515.526234944332
(2019-Feb-01.02623494)
3.9148e-05 TDB
period 1408.369523849332
3.86
5.8987e-06
1.615e-08
d
yr
n .2556147331391083 1.0706e-09 deg/d
Q 2.903861153613736 8.1082e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2096  
   data-arc span      15858 days (43.42 yr)  
   first obs. used      1977-02-18  
   last obs. used      2020-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:00:45  

Additional Information
 Earth MOID = 1.03517 au 
 Jupiter MOID = 2.27927 au 
 T_jup = 3.462 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457133.5 (2015-Apr-21.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813827745355142 2.9127e-08  
q 2.012470041234972 7.1128e-08 au
tp 2457109.408658673909
(2015-Mar-27.90865867)
3.8371e-05 TDB
node 140.7948656217648 4.1226e-05 deg
peri 314.3926863940872 4.2317e-05 deg
i 5.598718897432452 2.5358e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2096  
   data-arc span      15858 days (43.42 yr)  
   first obs. used      1977-02-18  
   last obs. used      2020-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:00:45  

Additional Information
 Jupiter MOID = 2.27927 au 
 T_jup = 3.462 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.483563800264825E-16 -2.065170870715443E-15 -5.556961006694681E-13 -5.879510092443326E-15 -1.425480050870244E-13 -6.916201002299199E-16
q -2.065170870715443E-15 5.059239276779571E-15 1.369811019691123E-12 1.516221548642825E-14 3.500536733534244E-13 1.728303857177226E-15
tp -5.556961006694681E-13 1.369811019691123E-12 1.47237161308895E-9 6.580384008689654E-12 3.879192583370629E-10 9.705568293835678E-13
node -5.879510092443326E-15 1.516221548642825E-14 6.580384008689654E-12 1.699604497921272E-9 -1.689861571606004E-9 8.920892644145372E-12
peri -1.425480050870244E-13 3.500536733534244E-13 3.879192583370629E-10 -1.689861571606004E-9 1.790698146770089E-9 -8.629415471203252E-12
i -6.916201002299199E-16 1.728303857177226E-15 9.705568293835678E-13 8.920892644145372E-12 -8.629415471203252E-12 6.430182548728036E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.26   n/a E2021B10  
rotation period rot_per 8.79414 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

11254 Konkohekisui           Discovered 1977 Feb. 18 by H. Kosai and K. Hurukawa at the Kiso Station of the Tokyo Astronomical Observatory.
Konko Hekisui (1909-1989) was a Japanese poet and sometime director of the library in Konko, Okayama prefecture.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1977 DL2 = 1997 LR17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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