Leto

00068, 1861 HB, 1861HB, I61H00B

All data for this body: [vot]

MPC data
Name (number) Leto (68)
a 2.78243
e 0.18432
i / sin(i) 7.9610 / 0.13850
q 2.26956
Q 3.29530
ω 304.8426
Node 44.0488
m 8.2305
n 0.2124
Epoch 2460800.5
nobs 14614
nopp 91
Years observed 1861-2025
rms 0.38
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.782
ep 0.149
sin(ip) 0.128
G 0.150
H 6.900
Mass 2.840e+18 8.766e+17
D 96.17 0.030
pV 0.345 0.0002
Value
Rotational Period 14.840
Period quality 3
Spectral Class S
Spectral Class Score 35.178
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7821 0.1486 0.1278 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.3900e+18 4.0000e+18 4.0000e+18 Zielenbach 2011AJ....142..120Z Deflec
2.3100e+18 Folkner 2014IPNPR.196C...1F Ephem
2.6000e+18 2.7500e+18 2.7500e+18 Zielenbach 2011AJ....142..120Z Deflec
2.7990e+18 1.1010e+18 1.1010e+18 Fienga 2020MNRAS.492..589F Ephem
3.0300e+18 2.7300e+18 2.7300e+18 Zielenbach 2011AJ....142..120Z Deflec
7.2300e+18 4.8500e+18 4.8500e+18 Zielenbach 2011AJ....142..120Z Deflec
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
106.84 0.049 0.049 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
112.00 14.000 14.000 Hanus 2013Icar..226.1045H AO/LC
114.86 11.490 11.490 Ali-Lagoa 2018A&A...612A..85A NEATM
115.84 19.820 19.820 Nugent 2016AJ....152...63N NEATM
121.96 1.190 1.190 Usui 2011PASJ...63.1117U NEATM
122.51 3.140 3.140 Masiero 2014ApJ...791..121M NEATM
122.57 5.300 5.300 Tedesco 2002AJ....123.1056T STM
128.06 4.044 4.044 Ryan&Woodward 2010AJ....140..933R IRAS-STM
128.85 4.168 4.168 Masiero 2011ApJ...741...68M NEATM
130.91 6.326 6.326 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
135.16 13.520 13.520 Ali-Lagoa 2018A&A...612A..85A NEATM
148.00 25.000 25.000 Durech 2011Icar..214..652D OCCULT
151.00 25.000 25.000 Durech 2011Icar..214..652D OCCULT
89.75 0.038 0.038 Ryan&Woodward 2010AJ....140..933R MSX-STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.174 0.0350 0.0350 Ali-Lagoa 2018A&A...612A..85A NEATM
0.204 0.0204 0.0204 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.207 0.0252 0.0252 Masiero 2011ApJ...741...68M NEATM
0.211 0.0138 0.0138 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.228 0.0210 0.0210 Tedesco 2002AJ....123.1056T STM
0.230 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.230 0.1200 0.1200 Nugent 2016AJ....152...63N NEATM
0.241 0.0480 0.0480 Ali-Lagoa 2018A&A...612A..85A NEATM
0.300 0.0003 0.0003 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
0.426 0.0004 0.0004 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
6.90 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
14.845449 2 Sidereal Podlewska 2020A&A...638A..11P Model
14.84547 2 Sidereal Durech 2011Icar..214..652D Model
14.84547 2 Sidereal Hanus 2011A&A...530A.134H Model
14.84547 2 Sidereal Hanus 2013Icar..226.1045H Model
14.848 3 Synodic Surdej 1980A&AS...41..335S Lightcurve
14.85 2- Synodic Behrend LCDB Lightcurve
14.85 2 Synodic Behrend LCDB Lightcurve
14.85 3 Synodic Harris 1980Icar...43...20H Lightcurve
14.86 3 Synodic Lopez 2005P&SS...53.1147L Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus VIS Lazzaro 2004Icar..172..179L SPEC
S Howell VISNIR Howell 1994JGR....9910847H PHOT
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.798 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.920000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S S 0.9917 0.9917 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT