Tokio

00498, 1900 EB, 1900EB, 1902 XA, 1902XA, J00E00B, J02X00A

All data for this body: [vot]

MPC data
Name (number) Tokio (498)
a 2.64956
e 0.22402
i / sin(i) 9.5027 / 0.16509
q 2.05600
Q 3.24311
ω 241.6369
Node 97.1512
m 188.6740
n 0.2285
Epoch 2460800.5
nobs 6728
nopp 64
Years observed 1902-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.650
ep 0.191
sin(ip) 0.150
G 0.150
H 8.860
Mass 7.446e+17 2.104e+17
D 69.46 0.026
pV 0.096 0.0001
Value
Rotational Period 41.800
Period quality 3
Spectral Class Xc
Spectral Class Score 18.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6501 0.1910 0.1503 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.1625e+17 2.9758e+17 2.9758e+17 Fienga INPOP19a Ephem
8.7300e+17 Folkner 2014IPNPR.196C...1F Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
62.36 0.034 0.034 Ryan&Woodward 2010AJ....140..933R MSX-STM
78.34 0.330 0.330 Nugent 2016AJ....152...63N NEATM
79.16 3.536 3.536 Ryan&Woodward 2010AJ....140..933R IRAS-STM
79.97 0.042 0.042 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
81.67 28.290 28.290 Masiero 2020PSJ.....1....5M NEATM
81.83 2.300 2.300 Tedesco 2002AJ....123.1056T STM
83.19 8.320 8.320 Ali-Lagoa 2018A&A...612A..85A NEATM
85.20 20.520 20.520 Masiero 2020PSJ.....1....5M NEATM
86.04 1.110 1.110 Usui 2011PASJ...63.1117U NEATM
88.00 17.600 17.600 Ali-Lagoa 2018A&A...612A..85A NEATM
88.06 25.100 25.100 Nugent 2016AJ....152...63N NEATM
90.90 4.181 4.181 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
91.85 33.470 33.470 Masiero 2021PSJ.....2..162M NEATM
93.10 31.830 31.830 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.050 0.0100 0.0100 Nugent 2016AJ....152...63N NEATM
0.050 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.050 0.0320 0.0320 Masiero 2012ApJ...759L...8M NEATM
0.050 0.0260 0.0530 Masiero 2021PSJ.....2..162M NEATM
0.054 0.0440 0.0440 Masiero 2020PSJ.....1....5M NEATM
0.056 0.0300 0.0300 Masiero 2020PSJ.....1....5M NEATM
0.057 0.0050 0.0050 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.069 0.0040 0.0040 Tedesco 2002AJ....123.1056T STM
0.070 0.0280 0.0280 Ali-Lagoa 2018A&A...612A..85A NEATM
0.073 0.0001 0.0001 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
0.075 0.0069 0.0069 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.078 0.0160 0.0160 Ali-Lagoa 2018A&A...612A..85A NEATM
0.119 0.0001 0.0001 Ryan&Woodward 2010AJ....140..933R MSX-STM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.86 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
20.0 2 Synodic Gil 1989MPBu...16...16H Lightcurve
24.82 1 Synodic Behrend LCDB Lightcurve
30.0 1 Synodic Gil 1995RMxAA..31...19G Lightcurve
41.85 3 Synodic Pilcher 2013MPBu...40..196P Lightcurve
41.9145 2 Synodic Pal 2020ApJS..247...26P Lightcurve
83.549 2 Synodic McNeill 2019ApJS..245...29M Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D Barucci-Tholen VIS Fitzsimmons 1994A&A...282..634F SPEC
D Barucci-Tholen VIS Lagerkvist 1993MNRAS.260..679L SPEC
L 0.960000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
X 0.395 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.1445 0.2750 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.6096 0.2750 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Xc Bus-DeMeo NIR Fornasier 2010Icar..210..655F SPEC