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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05116182825504366 3.5483e-08  
a 3.35800474016468 1.7514e-08 au
q 3.186203078368752 1.2437e-07 au
i 17.18759770742942 4.7874e-06 deg
node 320.5960037502381 1.2416e-05 deg
peri 299.3616388774085 5.6202e-05 deg
M 293.6801246712239 5.7398e-05 deg
tp 2459614.558385623980
(2022-Feb-04.05838562)
0.0003587 TDB
period 2247.607042167572
6.15
1.7584e-05
4.814e-08
d
yr
n .1601703470606763 1.2531e-09 deg/d
Q 3.529806401960608 1.841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2883  
   data-arc span      32136 days (87.98 yr)  
   first obs. used      1933-01-27  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40707  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:53:56  

Additional Information
 Earth MOID = 2.2046 au 
 Jupiter MOID = 1.73813 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 9.47   n/a E2021B10 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. 2020-October); 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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