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JPL Small-Body Database Browser
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2038 Bistro (1973 WF)
Classification: Main-belt Asteroid          SPK-ID: 2002038
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09060676720008136 3.9782e-08  
a 2.43529104764733 9.2401e-09 au
q 2.214637198628706 9.6789e-08 au
i 14.80951974628477 4.5917e-06 deg
node 73.47315113793826 1.5822e-05 deg
peri 183.9003516267964 2.8955e-05 deg
M 160.4741560711074 2.5267e-05 deg
tp 2457981.732727867471
9.6986e-05 TDB
period 1388.112724325562
n .259344931929006 1.476e-09 deg/d
Q 2.655944896665953 1.0077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2262  
   data-arc span      16805 days (46.01 yr)  
   first obs. used      1973-11-24  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39786  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:30:07  

Additional Information
 Earth MOID = 1.19966 au 
 Jupiter MOID = 2.38914 au 
 T_jup = 3.454 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9   n/a MPO421648  
diameter diameter 10.959 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 17.051 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Strabla, L.; Quadri, U.; Girelli, R. (2013) Minor Planet Bull. 40, 232-233.]
geometric albedo albedo 0.168   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B Sa   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)

2038 Bistro           Discovered 1973 Nov. 24 by P. Wild at Zimmerwald.
The French name for a small, cozy restaurant. The name is also suggested by the fact that (2038) = 2 x (1019) Stracke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5359Last Updated: 2006-03-21

Alternate Designations
 1973 WF = 1941 KD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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