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11612 Obu (1995 YZ1)
Classification: Main-belt Asteroid          SPK-ID: 2011612
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1756309985123291 3.2136e-08  
a 2.90031242512339 1.4653e-08 au
q 2.390927657901254 9.8471e-08 au
i 7.180755206234532 5.6867e-06 deg
node 11.19432911659148 2.8787e-05 deg
peri 60.1266516683489 3.3275e-05 deg
M 353.0996033969686 1.6179e-05 deg
tp 2459035.080968598437
(2020-Jul-04.58096860)
8.1135e-05 TDB
period 1804.120750098381
4.94
1.3672e-05
3.743e-08
d
yr
n .1995431846678604 1.5122e-09 deg/d
Q 3.409697192345526 1.7226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1538  
   data-arc span      10169 days (27.84 yr)  
   first obs. used      1992-03-25  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:06:00  

Additional Information
 Earth MOID = 1.41486 au 
 Jupiter MOID = 1.95082 au 
 T_jup = 3.253 
[ 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 13.6   n/a MPO365389  
diameter diameter 6.451 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.169   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11612 Obu           Discovered 1995 Dec. 21 by A. Nakamura at Kuma Kogen.
Obu City (population 76~000), where the discoverer lived for six and a half years, is located in the center of Aichi Prefecture. Known for its automobile industry, Obu is also famous for the 500-year-old "Doburoku Festival", held at Nagakusa-Tenjinsha Shrine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
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