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15776 (1993 KO)
Classification: Main-belt Asteroid          SPK-ID: 2015776
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188996749095767 2.8914e-08  
a 2.221898407803554 5.773e-09 au
q 1.957715409433606 6.3708e-08 au
i 5.738406625324794 3.5727e-06 deg
node 198.5581589650052 2.6251e-05 deg
peri 25.96592590472353 2.9659e-05 deg
M 70.45721595615461 1.3764e-05 deg
tp 2458763.740343499224
(2019-Oct-07.24034350)
4.6108e-05 TDB
period 1209.719617552302
3.31
4.7147e-06
1.291e-08
d
yr
n .2975896189303845 1.1598e-09 deg/d
Q 2.486081406173503 6.4594e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2793  
   data-arc span      12101 days (33.13 yr)  
   first obs. used      1987-09-23  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:00:56  

Additional Information
 Earth MOID = .95091 au 
 Jupiter MOID = 2.48881 au 
 T_jup = 3.633 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457281.5 (2015-Sep-16.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1188108875415491 2.8943e-08  
q 1.957740484764747 6.3783e-08 au
tp 2457553.630835293858
(2016-Jun-14.13083529)
4.5624e-05 TDB
node 198.6067254467869 2.6257e-05 deg
peri 25.77139759714753 2.9657e-05 deg
i 5.737418529019346 3.5725e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2793  
   data-arc span      12101 days (33.13 yr)  
   first obs. used      1987-09-23  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:00:56  

Additional Information
 Jupiter MOID = 2.48881 au 
 T_jup = 3.633 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.376693225141486E-16 -1.840355850347143E-15 -5.717061466045748E-13 -2.154906810292962E-15 -1.769394542780282E-13 5.430593694418939E-16
q -1.840355850347143E-15 4.068310360074476E-15 1.282520018154589E-12 4.702834926504816E-15 3.955352919130058E-13 -1.247136052221032E-15
tp -5.717061466045748E-13 1.282520018154589E-12 2.081551101286173E-9 -3.92701994902689E-12 6.34212399013798E-10 -8.362129617265823E-13
node -2.154906810292962E-15 4.702834926504816E-15 -3.92701994902689E-12 6.894387038778114E-10 -6.867951164614603E-10 -2.64084491216892E-11
peri -1.769394542780282E-13 3.955352919130058E-13 6.34212399013798E-10 -6.867951164614603E-10 8.795398575270984E-10 2.602649112572045E-11
i 5.430593694418939E-16 -1.247136052221032E-15 -8.362129617265823E-13 -2.64084491216892E-11 2.602649112572045E-11 1.276245567845769E-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 13.9   n/a MPO384890  
diameter diameter 4.498 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.36991 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.]
geometric albedo albedo 0.240   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15776 (1993 KO)          Discovered 1993-May-20 by Otomo, S. at Kiyosato
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1993 KO = 1987 SF23 = 1996 HH22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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