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4441 Toshie (1985 BB)
Classification: Main-belt Asteroid          SPK-ID: 2004441
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04026593131689439 4.4099e-08  
a 2.959340843954781 1.7156e-08 au
q 2.840180228788818 1.2878e-07 au
i 2.306866485557745 4.5727e-06 deg
node 62.28891477018549 0.00012904 deg
peri 243.8979285491522 0.00014553 deg
M 164.4413175144918 6.7704e-05 deg
tp 2458151.125230742890
(2018-Feb-01.62523074)
0.00035022 TDB
period 1859.477420603932
5.09
1.617e-05
4.427e-08
d
yr
n .193602781088397 1.6835e-09 deg/d
Q 3.078501459120745 1.7847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1637  
   data-arc span      15039 days (41.17 yr)  
   first obs. used      1978-11-30  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:13:28  

Additional Information
 Earth MOID = 1.82604 au 
 Jupiter MOID = 2.01668 au 
 T_jup = 3.264 
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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 13.4   n/a MPO458875  
diameter diameter 6.453 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.178 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.154   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4441 Toshie (1985 BB)          Discovered 1985-Jan-26 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2167-Aug-14 11:11 00:05 Thisb 0.039596630472129 0.0395802456463754 0.0396130263648471 2.84165361086405 2.84165355026785 2512765.965631731 4.93605658975109 1327.41351247064 68.534663690922 -52.1340919129236 68212.5335937827 T 32 CATAB v2.0f-lin.ifort 2020-Feb-22 17:13:42 2020-Feb-22 17:13

Alternate Designations
 1985 BB = 1986 LU1 = 1987 OM1 = 1988 UK = 1988 VL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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