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136650 (1995 HK2)
Classification: Main-belt Asteroid          SPK-ID: 2136650
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04091954486509124 7.8818e-08  
a 2.775920929854538 2.4495e-08 au
q 2.66233150882341 2.2005e-07 au
i 6.109386337684886 5.2924e-06 deg
node 85.79296714983602 7.8096e-05 deg
peri 271.2363437069739 0.00010061 deg
M 16.50790794996831 6.4019e-05 deg
tp 2458923.036234932042
(2020-Mar-14.53623493)
0.00030023 TDB
period 1689.308876023784
4.63
2.236e-05
6.122e-08
d
yr
n .2131049005362188 2.8207e-09 deg/d
Q 2.889510350885667 2.5498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      8422 days (23.06 yr)  
   first obs. used      1995-04-25  
   last obs. used      2018-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 05:25:15  

Additional Information
 Earth MOID = 1.66633 au 
 Jupiter MOID = 2.29787 au 
 T_jup = 3.326 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456855.5 (2014-Jul-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04357582409665609 7.9226e-08  
q 2.655926110282858 2.2201e-07 au
tp 2457228.502790286772
(2015-Jul-25.00279029)
0.0002794 TDB
node 85.85022599235138 7.8209e-05 deg
peri 270.3685348064104 9.8311e-05 deg
i 6.105491406805554 5.2925e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      8422 days (23.06 yr)  
   first obs. used      1995-04-25  
   last obs. used      2018-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 05:25:15  

Additional Information
 Jupiter MOID = 2.29787 au 
 T_jup = 3.326 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.276805720552298E-15 -1.748972855914111E-14 7.34932310998219E-12 -3.956872918245087E-15 1.466748555868993E-12 -5.764192291635144E-15
q -1.748972855914111E-14 4.928745997201017E-14 -1.978082848803568E-11 1.548594536644985E-14 -3.966881865720014E-12 1.663362349120251E-14
tp 7.34932310998219E-12 -1.978082848803568E-11 7.806264898534501E-8 4.66815286552566E-11 1.675741188545446E-8 -7.957967067226022E-12
node -3.956872918245087E-15 1.548594536644985E-14 4.66815286552566E-11 6.116695682461808E-9 -6.071861129440226E-9 -1.769456801098949E-10
peri 1.466748555868993E-12 -3.966881865720014E-12 1.675741188545446E-8 -6.071861129440226E-9 9.665091556455689E-9 1.742983231239826E-10
i -5.764192291635144E-15 1.663362349120251E-14 -7.957967067226022E-12 -1.769456801098949E-10 1.742983231239826E-10 2.801017150970174E-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 15.9   n/a MPO439843  
diameter diameter 3.665 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136650 (1995 HK2)          Discovered 1995-Apr-25 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1995 HK2 = 2001 TO203 = 2003 AO45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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