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1266 Tone (1927 BD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001266
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05123176809548212 3.5665e-08  
a 3.358888776102777 1.7629e-08 au
q 3.186806965266961 1.248e-07 au
i 17.18679401432313 4.8293e-06 deg
node 320.59463211446 1.246e-05 deg
peri 299.0767159170352 5.7358e-05 deg
M 261.9447201840158 5.8746e-05 deg
tp 2459612.935482267891
(2022-Feb-02.43548227)
0.00036753 TDB
period 2248.494665766078
6.16
1.7702e-05
4.847e-08
d
yr
n .1601071176556896 1.2605e-09 deg/d
Q 3.530970586938592 1.8532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2797  
   data-arc span      31944 days (87.46 yr)  
   first obs. used      1933-01-27  
   last obs. used      2020-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4115  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:49  

Additional Information
 Earth MOID = 2.20738 au 
 Jupiter MOID = 1.7373 au 
 T_jup = 3.082 
[ 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 9.4   n/a MPO502165 IRAS observations used: 18
diameter diameter 75.470 km 0.523 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.605 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Montminy, B.; McDonald, K.; Durkee, R.I. (2018) Minor Planet Bull. 45, 331-333.]
[Benishek, V. (2019) Minor Planet Bull. 46, 341-345.]
geometric albedo albedo 0.053   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.732   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.95, mean=8.24, max.=12.59) deg.
U-B UB 0.317   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.01, mean=9.22, max.=11.42) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1266 Tone (1927 BD)          Discovered 1927-Jan-23 by Oikawa, O. at Tokyo
Independent discovery Jan. 24 by G. Neujmin, Simeis, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 BD = 1933 BM = 1934 EC = A899 PH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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