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3287 Olmstead (1981 DK1)
Classification: Mars-crossing Asteroid          SPK-ID: 2003287
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .300392447609196 3.8805e-08  
a 2.366047591437812 6.7017e-09 au
q 1.655304764285965 9.1732e-08 au
i 12.07668204152325 4.2797e-06 deg
node 213.2551596419602 2.0904e-05 deg
peri 95.71720036491342 2.1954e-05 deg
M 181.3305103348117 6.0417e-06 deg
tp 2459660.253247935562
(2022-Mar-21.75324794)		 2.2956e-05 TDB
period 1329.332555333753
3.64		 5.6479e-06
1.546e-08		 d
yr
n .2708125958064838 1.1506e-09 deg/d
Q 3.076790418589659 8.7149e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1550  
   data-arc span      14265 days (39.06 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:32  

Additional Information
 Earth MOID = .695803 au 
 Jupiter MOID = 2.36313 au 
 T_jup = 3.457 
[ show covariance matrix ]

[ 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 14.2   n/a MPO452209  
diameter diameter 5.515 km 1.478 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 4.963 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 380-386.]
[Benishek, V. (2019) Minor Planet Bull. 46, 87-90.]
geometric albedo albedo 0.132   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B L   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3287 Olmstead (1981 DK1)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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