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3773 Smithsonian (1984 YY)
Classification: Main-belt Asteroid          SPK-ID: 2003773
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .183673372273186 1.8244e-08  
a 2.166005943293048 4.8538e-09 au
q 1.76816832732465 4.0881e-08 au
i 1.325383262239812 1.1329e-06 deg
node 63.45167372323454 3.8e-05 deg
peri 286.8361377076122 4.067e-05 deg
M 175.7127633483543 7.2795e-06 deg
tp 2458632.185547148010
(2019-May-28.68554715)
2.2678e-05 TDB
period 1164.361649819974
3.19
3.9138e-06
1.072e-08
d
yr
n .3091822889010994 1.0393e-09 deg/d
Q 2.563843559261445 5.7453e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2739  
   data-arc span      26051 days (71.32 yr)  
   first obs. used      1949-11-25  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47934  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:11:29  

Additional Information
 Earth MOID = .760938 au 
 Jupiter MOID = 2.85771 au 
 T_jup = 3.670 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837030144761986 1.8288e-08  
q 1.7685954736036 4.1008e-08 au
tp 2456303.485264852897
(2013-Jan-10.98526485)
2.0616e-05 TDB
node 63.46624952432141 3.7982e-05 deg
peri 286.8687897397017 4.0648e-05 deg
i 1.326416629540664 1.1326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2739  
   data-arc span      26051 days (71.32 yr)  
   first obs. used      1949-11-25  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47934  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:11:29  

Additional Information
 Jupiter MOID = 2.85771 au 
 T_jup = 3.670 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.344558120732098E-16 -7.467931255044913E-16 -5.179841794628077E-14 1.801869096251474E-14 -7.184645535007891E-15 -8.457886024128804E-17
q -7.467931255044913E-16 1.681637045338003E-15 1.183362195555378E-13 -4.670096961089884E-14 2.596468560881508E-14 2.657334481225738E-16
tp -5.179841794628077E-14 1.183362195555378E-13 4.250334083569538E-10 -2.570049603532188E-10 3.793757653181222E-10 -2.488823049906706E-12
node 1.801869096251474E-14 -4.670096961089884E-14 -2.570049603532188E-10 1.44265118530714E-9 -1.528119311140807E-9 1.285754461265246E-11
peri -7.184645535007891E-15 2.596468560881508E-14 3.793757653181222E-10 -1.528119311140807E-9 1.652290413971382E-9 -1.393583931944301E-11
i -8.457886024128804E-17 2.657334481225738E-16 -2.488823049906706E-12 1.285754461265246E-11 -1.393583931944301E-11 1.282669772010107E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.33   n/a E2021B10  
rotation period rot_per 6.9804 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2007) Minor Planet Bull. 34, 31-32.]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]

3773 Smithsonian (1984 YY)          Discovered 1984-Dec-23 by Oak Ridge Observatory at Oak Ridge
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 YY = 1938 DA2 = 1971 TS = 1974 QO = 1981 YC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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