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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 ]

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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04030793826129643 4.1484e-08  
a 2.959209841084372 1.4469e-08 au
q 2.839930193507723 1.2369e-07 au
i 2.306762435097104 3.7643e-06 deg
node 62.28237688015444 0.00012714 deg
peri 244.1046420320573 0.00014175 deg
M 202.9465076916151 6.4337e-05 deg
tp 2460011.661198061601
(2023-Mar-08.16119806)
0.00033311 TDB
period 1859.353950110067
5.09
1.3637e-05
3.734e-08
d
yr
n .1936156372909468 1.42e-09 deg/d
Q 3.078489488661022 1.5052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1916  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1978-11-30  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:37:46  

Additional Information
 Earth MOID = 1.82382 au 
 Jupiter MOID = 2.0161 au 
 T_jup = 3.264 
[ 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 13.39   n/a MPCxxxxx  
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. 2020-October); 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

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