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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .183546937266747 3.2672e-08  
a 2.166151439251165 5.377e-09 au
q 1.768560976920658 7.0285e-08 au
i 1.325397723140386 4.3184e-06 deg
node 63.45639775611812 0.00014043 deg
peri 286.8212674648955 0.00014096 deg
M 113.9015580340656 1.4086e-05 deg
tp 2458632.066752402702
(2019-May-28.56675240)
4.4896e-05 TDB
period 1164.478971353127
3.19
4.3359e-06
1.187e-08
d
yr
n .309151138712002 1.1511e-09 deg/d
Q 2.563741901581672 6.364e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2520  
   data-arc span      25716 days (70.41 yr)  
   first obs. used      1949-11-25  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:59:00  

Additional Information
 Earth MOID = .763088 au 
 Jupiter MOID = 2.85728 au 
 T_jup = 3.670 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO448951  
rotation period rot_per 6.9804 h n/a LCDB (Rev. 2019-August); 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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