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15469 Ohmura (1999 BC)
Classification: Main-belt Asteroid          SPK-ID: 2015469
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06542163349495896 3.3253e-08  
a 2.912974466599859 1.2411e-08 au
q 2.72240291866579 9.7019e-08 au
i 2.090303463958973 4.016e-06 deg
node 29.97393035538407 9.1425e-05 deg
peri 59.65095459335257 9.6163e-05 deg
M 222.5527197235354 3.148e-05 deg
tp 2460089.825372451095
(2023-May-25.32537245)
0.00016078 TDB
period 1815.948148121586
4.97
1.1606e-05
3.178e-08
d
yr
n .1982435458701745 1.267e-09 deg/d
Q 3.103546014533929 1.3223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      10987 days (30.08 yr)  
   first obs. used      1991-07-11  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:26:55  

Additional Information
 Earth MOID = 1.73968 au 
 Jupiter MOID = 2.01708 au 
 T_jup = 3.279 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457037.5 (2015-Jan-15.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06866080233328135 3.3257e-08  
q 2.707813112447099 9.7047e-08 au
tp 2456466.809054982066
(2013-Jun-23.30905498)
0.00014452 TDB
node 30.06586893947969 9.1405e-05 deg
peri 59.98736813662257 9.5709e-05 deg
i 2.091965212218708 4.0196e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      10987 days (30.08 yr)  
   first obs. used      1991-07-11  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 21:26:55  

Additional Information
 Jupiter MOID = 2.01708 au 
 T_jup = 3.279 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.10599873310306E-15 -3.204133110043062E-15 -8.72039356011463E-13 -2.8153584919918E-15 -1.804756279000809E-13 8.598905603605579E-17
q -3.204133110043062E-15 9.418199587084152E-15 3.025452277480875E-12 8.491111745814854E-15 6.262755077448513E-13 -1.732898761988414E-16
tp -8.72039356011463E-13 3.025452277480875E-12 2.088646540710856E-8 -5.554254282301739E-12 4.113790203860888E-9 -4.521569485953438E-13
node -2.8153584919918E-15 8.491111745814854E-15 -5.554254282301739E-12 8.35478523745056E-9 -8.34988928640031E-9 5.956649392240705E-11
peri -1.804756279000809E-13 6.262755077448513E-13 4.113790203860888E-9 -8.34988928640031E-9 9.160162261401601E-9 -5.960246363263538E-11
i 8.598905603605579E-17 -1.732898761988414E-16 -4.521569485953438E-13 5.956649392240705E-11 -5.960246363263538E-11 1.615736375232728E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.08   n/a MPO636297  
diameter diameter 5.517 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.160   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15469 Ohmura           Discovered 1999 Jan. 16 by T. Kobayashi at Oizumi.
Tsutomu Ohmura (b. 1965) is a computer engineer and amateur astronomer. He is a key member of Ota Astronomical Club and very active in the popularization of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13

Alternate Designations
 1999 BC = 1991 NR9 = 2000 HK12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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