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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3004729277158089 3.831e-08  
a 2.365806875838251 6.5633e-09 au
q 1.65494595744494 9.0703e-08 au
i 12.0775370233373 4.1361e-06 deg
node 213.2440872263179 2.0429e-05 deg
peri 95.75222846348606 2.1345e-05 deg
M 235.4594329526867 6.0096e-06 deg
tp 2459660.307127892956
(2022-Mar-21.80712789)
2.2736e-05 TDB
period 1329.129696178262
3.64
5.531e-06
1.514e-08
d
yr
n .270853928728801 1.1271e-09 deg/d
Q 3.076667794231561 8.5354e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      14588 days (39.94 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46929  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:09:22  

Additional Information
 Earth MOID = .693741 au 
 Jupiter MOID = 2.3631 au 
 T_jup = 3.457 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457219.5 (2015-Jul-16.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3012363003447324 3.8331e-08  
q 1.652621686064317 9.0817e-08 au
tp 2457002.318305471846
(2014-Dec-10.81830547)
2.1703e-05 TDB
node 213.2868462737489 2.044e-05 deg
peri 95.74338172116147 2.1349e-05 deg
i 12.07635622163542 4.1367e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      14588 days (39.94 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46929  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:09:22  

Additional Information
 Jupiter MOID = 2.3631 au 
 T_jup = 3.457 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.469247577872728E-15 -3.476689120422416E-15 1.70527971787887E-13 1.083840129943389E-14 7.257436895226965E-14 -9.201139463923238E-15
q -3.476689120422416E-15 8.247738712514178E-15 -4.21154181166328E-13 -2.501623531190168E-14 -1.777003721737674E-13 2.196403607610857E-14
tp 1.70527971787887E-13 -4.21154181166328E-13 4.710134302963451E-10 1.232431706638632E-12 1.492548872220762E-10 -1.242141320529262E-12
node 1.083840129943389E-14 -2.501623531190168E-14 1.232431706638632E-12 4.177798131291524E-10 -4.076874768651218E-10 -1.650795507520003E-11
peri 7.257436895226965E-14 -1.777003721737674E-13 1.492548872220762E-10 -4.076874768651218E-10 4.557669284627474E-10 1.571409159049451E-11
i -9.201139463923238E-15 2.196403607610857E-14 -1.242141320529262E-12 -1.650795507520003E-11 1.571409159049451E-11 1.711201735785668E-11

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 14.25   n/a E2021B10  
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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