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JPL Small-Body Database Browser
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27291 Greghansen (2000 AV129)
Classification: Main-belt Asteroid          SPK-ID: 2027291
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 .1607437965246318 3.6426e-08  
a 2.218210238504524 8.4516e-09 au
q 1.861646703277498 8.4297e-08 au
i 4.880850436047211 3.6237e-06 deg
node 255.0684734874731 4.7055e-05 deg
peri 8.67652816445954 4.8783e-05 deg
M 299.8999520152315 1.4648e-05 deg
tp 2459201.953493515417
(2020-Dec-18.45349352)
4.9532e-05 TDB
period 1206.708814673993
3.30
6.8965e-06
1.888e-08
d
yr
n .298332120907941 1.705e-09 deg/d
Q 2.57477377373155 9.8101e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1022  
   data-arc span      10507 days (28.77 yr)  
   first obs. used      1991-07-16  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:09:55  

Additional Information
 Earth MOID = .846157 au 
 Jupiter MOID = 2.49544 au 
 T_jup = 3.630 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457215.5 (2015-Jul-12.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .161079641581925 3.6358e-08  
q 1.860839694236499 8.4174e-08 au
tp 2456788.115387848642
(2014-May-10.61538785)
4.5932e-05 TDB
node 255.1155851928999 4.7076e-05 deg
peri 8.598879073987851 4.88e-05 deg
i 4.879757420274269 3.6231e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1022  
   data-arc span      10507 days (28.77 yr)  
   first obs. used      1991-07-16  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:09:55  

Additional Information
 Jupiter MOID = 2.49544 au 
 T_jup = 3.630 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.321893850306639E-15 -3.051854364244683E-15 -3.041287730747951E-13 -3.554011877895908E-16 -7.392227812356981E-14 -7.577580323781298E-16
q -3.051854364244683E-15 7.085302204395507E-15 7.117185750979193E-13 3.989801087517037E-16 1.767700581370319E-13 1.938668628520176E-15
tp -3.041287730747951E-13 7.117185750979193E-13 2.109733080124998E-9 2.101566308932044E-12 6.056902554991863E-10 1.66518567716236E-12
node -3.554011877895908E-16 3.989801087517037E-16 2.101566308932044E-12 2.216171012208882E-9 -2.207287418511179E-9 -1.336024497189898E-11
peri -7.392227812356981E-14 1.767700581370319E-13 6.056902554991863E-10 -2.207287418511179E-9 2.381483876486672E-9 1.381233108463373E-11
i -7.577580323781298E-16 1.938668628520176E-15 1.66518567716236E-12 -1.336024497189898E-11 1.381233108463373E-11 1.312711504909811E-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 15.6   n/a MPO468049  
diameter diameter 2.000 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.335   0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27291 Greghansen           Discovered 2000 Jan. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Gregory A. Hansen mentored a finalist in the 2011 Intel Science Talent Search, a science competition for high-school seniors. He teaches at the Lawrenceville School, Lawrenceville, New Jersey, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110319/MPCPages.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2000 AV129 = 1991 OS = 1998 SB132 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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