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56072 (1998 YK8)
Classification: Main-belt Asteroid          SPK-ID: 2056072
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1348577638399162 2.5612e-08  
a 2.304908349432999 6.1498e-09 au
q 1.994073563572512 5.9032e-08 au
i 5.404712947931896 3.1643e-06 deg
node 129.616657813679 3.0862e-05 deg
peri 79.61784621034789 3.309e-05 deg
M 78.55824207665756 1.2167e-05 deg
tp 2459117.587374200168
(2020-Sep-25.08737420)
4.2892e-05 TDB
period 1278.141448098599
3.50
5.1154e-06
1.401e-08
d
yr
n .2816589670380745 1.1273e-09 deg/d
Q 2.615743135293485 6.9792e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1816  
   data-arc span      8272 days (22.65 yr)  
   first obs. used      1998-12-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:15:44  

Additional Information
 Earth MOID = .998337 au 
 Jupiter MOID = 2.35541 au 
 T_jup = 3.571 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457172.5 (2015-May-30.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1351341017484403 2.5572e-08  
q 1.992743823091502 5.8987e-08 au
tp 2456562.255222624130
(2013-Sep-26.75522262)
4.1252e-05 TDB
node 129.6481786433313 3.086e-05 deg
peri 79.48949741054642 3.3085e-05 deg
i 5.405172682374076 3.1649e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1816  
   data-arc span      8272 days (22.65 yr)  
   first obs. used      1998-12-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:15:44  

Additional Information
 Jupiter MOID = 2.35541 au 
 T_jup = 3.571 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.539325213142857E-16 -1.502140534777797E-15 -1.650971208179393E-15 -8.879657853360357E-16 -8.052152997432343E-16 -1.245605741443151E-15
q -1.502140534777797E-15 3.479470185652761E-15 9.680636422905973E-15 1.726481835852248E-15 6.627915612969525E-15 2.923384110768747E-15
tp -1.650971208179393E-15 9.680636422905973E-15 1.701688108160326E-9 -1.303759514400345E-12 4.990032814020443E-10 -9.072639322100047E-13
node -8.879657853360357E-16 1.726481835852248E-15 -1.303759514400345E-12 9.523421558935096E-10 -9.481354163126324E-10 -9.956263930738915E-13
peri -8.052152997432343E-16 6.627915612969525E-15 4.990032814020443E-10 -9.481354163126324E-10 1.094649265583434E-9 7.625590713287368E-13
i -1.245605741443151E-15 2.923384110768747E-15 -9.072639322100047E-13 -9.956263930738915E-13 7.625590713287368E-13 1.001632408344179E-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 15.12   n/a MPO636840  
diameter diameter 1.574 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.593   0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56072 (1998 YK8)          Discovered 1998-Dec-24 by Kobayashi, T. at Oizumi
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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