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29249 Hiraizumi (1992 SN12)
Classification: Main-belt Asteroid          SPK-ID: 2029249
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07402226672903738 3.8324e-08  
a 2.779775454806359 1.4071e-08 au
q 2.574010174643852 1.079e-07 au
i .6905050919929259 4.0428e-06 deg
node 130.751866991481 0.0003659 deg
peri 267.8210165590261 0.00036712 deg
M 327.6247385667903 3.0338e-05 deg
tp 2459152.738250304874
(2020-Oct-30.23825030)
0.00014306 TDB
period 1692.828650135198
4.63
1.2854e-05
3.519e-08
d
yr
n .2126618071895513 1.6147e-09 deg/d
Q 2.985540734968867 1.5113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1276  
   data-arc span      9913 days (27.14 yr)  
   first obs. used      1992-09-26  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:54:45  

Additional Information
 Earth MOID = 1.58146 au 
 Jupiter MOID = 2.32002 au 
 T_jup = 3.330 
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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 14.3   n/a MPO435966  
diameter diameter 7.703 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

29249 Hiraizumi           Discovered 1992 Sept. 26 by T. Seki at Geisei.
The town of Hiraizumi in Iwate prefecture reached the height of its prosperity during the twelfth century as the home of the Fujiwara family in Oshu province. The Golden Hall (Konjikido) of Chusonji and the ruins of Motsuji temple are reminiscent of its glory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2028-Sep-03 12:14 < 00:01 Hygie 0.0352955810809722 0.0352943636677107 0.0352967986487413 2.95547218275066 2.95547181236408 2462018.009445963 0.840694028139378 210.170638430033 49.433662689564 -80.138333369534 104977.579989683 T 26 CATAB v2.0f-lin.ifort 2019-Dec-14 01:55:00 2019-Dec-14 01:55
2086-Oct-11 17:07 00:03 Europ 0.016493500350487 0.016480586942746 0.016506415057692 2.56699203720471 2.56699178616965 2483240.213196992 3.43047473360047 683.172846639925 30.8377290873099 19.7711407797077 27229.5255508072 T 26 CATAB v2.0f-lin.ifort 2019-Dec-14 01:55:00 2019-Dec-14 01:55
2183-Nov-17 19:23 00:02 David 0.029654390115809 0.0296422432164475 0.0296665686913453 5.26006377422295 5.26006367737219 2518705.307555103 2.18245703845475 1644.49516037781 23.3256595150488 68.3838000219353 176718.724976599 T 26 CATAB v2.0f-lin.ifort 2019-Dec-14 01:55:00 2019-Dec-14 01:55

Alternate Designations
 1992 SN12 = 1994 CD = 1996 NC2 = 1997 WA34 = 1999 FH42 = 2000 KL26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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