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146839 (2002 AK49)
Classification: Main-belt Asteroid          SPK-ID: 2146839
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06031665803332092 3.9412e-08  
a 3.187820860595029 3.5917e-08 au
q 2.995542159875032 1.3082e-07 au
i 12.17213370858357 4.4684e-06 deg
node 123.4384243911828 2.3941e-05 deg
peri 169.4343527829033 4.8419e-05 deg
M 268.9749956820568 4.3187e-05 deg
tp 2459526.151002108466
(2021-Nov-07.65100211)		 0.00025153 TDB
period 2078.927237378281
5.69		 3.5134e-05
9.619e-08		 d
yr
n .1731662337802612 2.9266e-09 deg/d
Q 3.380099561315026 3.8083e-08 au
   Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      6685 days (18.30 yr)  
   first obs. used      2002-01-09  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:23:22  

Additional Information
 Earth MOID = 1.98041 au 
 Jupiter MOID = 1.83699 au 
 T_jup = 3.160 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457341.5 (2015-Nov-15.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05897147945827326 3.9446e-08  
q 3.001018204120482 1.3092e-07 au
tp 2457443.196197614192
(2016-Feb-24.69619761)		 0.00025043 TDB
node 123.4586674427594 2.3943e-05 deg
peri 169.0065475941657 4.9233e-05 deg
i 12.17000245148616 4.4676e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      6685 days (18.30 yr)  
   first obs. used      2002-01-09  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:23:22  

Additional Information
 Jupiter MOID = 1.83699 au 
 T_jup = 3.160 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.555973505550251E-15 -4.989952420659911E-15 -1.080005887093444E-12 -4.694853337756418E-15 -1.839754128111159E-13 7.606949384135236E-17
q -4.989952420659911E-15 1.714109284978936E-14 4.454051961660782E-12 2.226926348798672E-14 7.438983787398243E-13 2.252730996371586E-15
tp -1.080005887093444E-12 4.454051961660782E-12 6.271275631491714E-8 2.373266943514303E-11 1.081573219449659E-8 1.070979199384771E-12
node -4.694853337756418E-15 2.226926348798672E-14 2.373266943514303E-11 5.732433633968042E-10 -5.558769723856856E-10 -6.852783337290926E-12
peri -1.839754128111159E-13 7.438983787398243E-13 1.081573219449659E-8 -5.558769723856856E-10 2.423843048825546E-9 6.884412488080079E-12
i 7.606949384135236E-17 2.252730996371586E-15 1.070979199384771E-12 -6.852783337290926E-12 6.884412488080079E-12 1.995970507814579E-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 14.9   n/a MPO436737  
diameter diameter 6.904 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146839 (2002 AK49)          Discovered 2002-Jan-09 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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