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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 ]

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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.


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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 
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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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1904-May-04 06:12 < 00:01 Iris 0.0300629114465401 0.0300474877771479 0.030078337733712 7.15035991325653 7.15035988651328 2416604.758160406 0.480968215795563 887.570921108954 47.5220042243006 29.998049861971 47508.755709907 T 22 CATAB v2.0f-lin.ifort 2020-May-20 06:10:03 2020-May-20 06:10
1928-Dec-13 05:24 < 00:01 Iris 0.0234588191645594 0.0234498349232997 0.0234678096885492 7.20362856134718 7.20362852732865 2425593.724746014 0.434695926476925 755.047861209161 40.1035986948979 -53.7078524447127 70571.7827241904 T 22 CATAB v2.0f-lin.ifort 2020-May-20 06:10:03 2020-May-20 06:10
2000-Mar-12 22:22 < 00:01 Iris 0.0215972562034228 0.0215959644896257 0.0215985479472214 7.47987673481594 7.47987669922987 2451616.432177111 0.190577951486017 87.0937421140004 46.9487150253546 -53.0584704840129 59338.2581184437 T 22 CATAB v2.0f-lin.ifort 2020-May-20 06:10:03 2020-May-20 06:10
2002-Dec-27 18:31 < 00:01 David 0.0423603505070794 0.0423597824802773 0.0423609185459996 7.32071591876009 7.32071587004427 2452636.271233145 0.376913451292045 75.2912948902902 24.325029160643 78.2597261467058 255565.860167284 T 22 CATAB v2.0f-lin.ifort 2020-May-20 06:10:03 2020-May-20 06:10
2024-Oct-19 10:05 < 00:01 Iris 0.0449774378286402 0.0449741617109633 0.0449807140015075 6.96483757546727 6.96483755711595 2460602.920461083 0.206630526639254 182.309906166232 39.8061047328872 -27.0775528949463 83649.5366870799 T 22 CATAB v2.0f-lin.ifort 2020-May-20 06:10:03 2020-May-20 06:10

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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