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17509 Ikumadan (1992 JR)
Classification: Main-belt Asteroid          SPK-ID: 2017509
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2531898921331837 3.2363e-08  
a 2.319347870388673 5.5761e-09 au
q 1.732112433265636 7.6124e-08 au
i 8.125168933711135 3.7003e-06 deg
node 115.7840384157487 2.5399e-05 deg
peri 95.84563498232529 2.6482e-05 deg
M 351.4950732098979 8.3462e-06 deg
tp 2459030.980026713900
(2020-Jun-30.48002671)
2.9963e-05 TDB
period 1290.17096652425
3.53
4.6526e-06
1.274e-08
d
yr
n .2790327866157523 1.0063e-09 deg/d
Q 2.906583307511711 6.9879e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1728  
   data-arc span      23533 days (64.43 yr)  
   first obs. used      1955-11-24  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:37:14  

Additional Information
 Earth MOID = .749512 au 
 Jupiter MOID = 2.10767 au 
 T_jup = 3.522 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456996.5 (2014-Dec-05.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2534513736957658 3.2333e-08  
q 1.731519117297347 7.6075e-08 au
tp 2456450.408903809702
(2013-Jun-06.90890381)
2.686e-05 TDB
node 115.8157958159028 2.5398e-05 deg
peri 95.78796629565811 2.648e-05 deg
i 8.12566043725756 3.7008e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1728  
   data-arc span      23533 days (64.43 yr)  
   first obs. used      1955-11-24  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:37:14  

Additional Information
 Jupiter MOID = 2.10767 au 
 T_jup = 3.522 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.045436275518328E-15 -2.456253100938773E-15 -2.563085470371105E-13 8.440484038665469E-15 -7.039452352707723E-14 -2.02783695755284E-15
q -2.456253100938773E-15 5.787343235064502E-15 6.139104031421816E-13 -1.99263222867092E-14 1.698688991141702E-13 5.037292416152237E-15
tp -2.563085470371105E-13 6.139104031421816E-13 7.214667536069057E-10 -5.931589156394628E-12 2.136859177158273E-10 1.713196073670827E-12
node 8.440484038665469E-15 -1.99263222867092E-14 -5.931589156394628E-12 6.450480765260025E-10 -6.396642275371972E-10 1.324764192136217E-11
peri -7.039452352707723E-14 1.698688991141702E-13 2.136859177158273E-10 -6.396642275371972E-10 7.012071973714468E-10 -1.261129094340694E-11
i -2.02783695755284E-15 5.037292416152237E-15 1.713196073670827E-12 1.324764192136217E-11 -1.261129094340694E-11 1.369559565731543E-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 14.2   n/a PDS3 (MPO 4071)  
diameter diameter 3.535 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.788 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bull. 33, 92-95.]
geometric albedo albedo 0.246   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17509 Ikumadan           Discovered 1992 May 4 by T. Seki at Geisei.
Conductor Ikuma Dan (1924-2001), grandson of financier Takuma Dan, was a leading member of the Art Academy of Japan. He composed symphonies, songs and operas, including the celebrated Yuzuru ("The Evening Crane"). The name was suggested by K. Tomita, who was a classmate at Aoyama Gakuin High School.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1992 JR = 1999 GR3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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