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JPL Small-Body Database Browser
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5838 Hamsun (2170 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2005838
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370845961540489 4.7631e-08  
a 2.549254027392132 1.1499e-08 au
q 2.199790568552999 1.2095e-07 au
i 14.36843302965933 4.252e-06 deg
node 186.5022813439398 2.038e-05 deg
peri 59.40340561133833 2.4452e-05 deg
M 273.1933536567644 1.5274e-05 deg
tp 2459358.983008292434
(2021-May-24.48300829)
6.3594e-05 TDB
period 1486.682050530948
4.07
1.0059e-05
2.754e-08
d
yr
n .24214996062637 1.6384e-09 deg/d
Q 2.898717486231265 1.3075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      17017 days (46.59 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47242  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:26:32  

Additional Information
 Earth MOID = 1.22565 au 
 Jupiter MOID = 2.16665 au 
 T_jup = 3.384 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456763.5 (2014-Apr-16.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379438735193223 4.7492e-08  
q 2.197171256643507 1.2073e-07 au
tp 2456386.478422253067
(2013-Apr-03.97842225)
6.1854e-05 TDB
node 186.5331483575957 2.0386e-05 deg
peri 59.51685537428855 2.4435e-05 deg
i 14.36696601950856 4.2511e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      17017 days (46.59 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47242  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:26:32  

Additional Information
 Jupiter MOID = 2.16665 au 
 T_jup = 3.384 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.255506344455872E-15 -5.714678760427105E-15 3.601604278683415E-13 -6.47433437277065E-15 6.979977066819819E-14 -5.627846410850614E-15
q -5.714678760427105E-15 1.457564143146188E-14 -9.743665199854775E-13 1.643934476877232E-14 -1.857578769238993E-13 1.47738257774008E-14
tp 3.601604278683415E-13 -9.743665199854775E-13 3.825944260284981E-9 2.5051767512261E-11 8.689492459659688E-10 -9.726117660882015E-13
node -6.47433437277065E-15 1.643934476877232E-14 2.5051767512261E-11 4.155964486871957E-10 -3.961812817918984E-10 2.130510754672821E-11
peri 6.979977066819819E-14 -1.857578769238993E-13 8.689492459659688E-10 -3.961812817918984E-10 5.970655772389705E-10 -2.074864763220453E-11
i -5.627846410850614E-15 1.47738257774008E-14 -9.726117660882015E-13 2.130510754672821E-11 -2.074864763220453E-11 1.807190681138965E-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 13.5   n/a MPO452249  
diameter diameter 4.882 km 0.507 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.355   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5838 Hamsun (2170 T-2)          Discovered 1973-Sep-29 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 2170 T-2 = 1988 FG3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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