Io

00085, 1865 SA, 1865SA, 1899 LA, 1899LA, 1899 UA, 1899UA, I65S00A, I99L00A, I99U00A

All data for this body: [vot]

MPC data
Name (number) Io (85)
a 2.65361
e 0.19363
i / sin(i) 11.9616 / 0.20726
q 2.13979
Q 3.16743
ω 122.9062
Node 203.0505
m 225.8747
n 0.2280
Epoch 2460200.5
nobs 7050
nopp 71
Years observed 1865-2023
rms 0.44
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.654
ep 0.152
sin(ip) 0.219
Value Standard error
G 0.150
H 7.980
Mass 4.509e+18 7.266e+17
D 156.22 1.316
pV 0.065 0.0022
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 502 Eunomia 1.4700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6537 0.1516 0.2187 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.4000e+18 6.3300e+18 6.3300e+18 Zielenbach 2011AJ....142..120Z Deflec
3.3200e+17 3.4500e+18 3.4500e+18 Zielenbach 2011AJ....142..120Z Deflec
3.4900e+18 2.6400e+18 2.6400e+18 Zielenbach 2011AJ....142..120Z Deflec
3.8700e+18 2.6800e+18 2.6800e+18 Zielenbach 2011AJ....142..120Z Deflec
4.3548e+18 1.6107e+18 1.6107e+18 Fienga 2013arXiv1301.1510F Ephem
5.0340e+18 9.9900e+17 9.9900e+17 Fienga 2020MNRAS.492..589F Ephem
6.2310e+18 Folkner 2014IPNPR.196C...1F Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
116.50 32.510 32.510 Nugent 2016AJ....152...63N NEATM
128.01 36.280 36.280 Masiero 2021PSJ.....2..162M NEATM
128.15 30.690 30.690 Nugent 2016AJ....152...63N NEATM
144.73 42.281 42.281 Masiero 2017AJ....154..168M NEATM
150.66 1.910 1.910 Usui 2011PASJ...63.1117U NEATM
151.00 nan nan Ali-Lagoa 2016A&A...591A..14A NEATM
151.57 38.840 38.840 Masiero 2017AJ....154..168M NEATM
151.95 15.190 15.190 Ali-Lagoa 2018A&A...612A..85A NEATM
152.00 15.000 15.000 Hanus 2013Icar..226.1045H AO/LC
154.79 3.800 3.800 Tedesco 2002AJ....123.1056T STM
155.24 5.089 5.089 Ryan&Woodward 2010AJ....140..933R IRAS-STM
163.00 15.000 15.000 Durech 2011Icar..214..652D OCCULT
163.00 18.648 18.648 Masiero 2011ApJ...741...68M NEATM
165.00 3.000 3.000 Hanus 2017A&A...601A.114H AO/OCCULT/LC
165.78 16.580 16.580 Ali-Lagoa 2018A&A...612A..85A NEATM
168.01 10.560 10.560 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
169.46 4.520 4.520 Masiero 2014ApJ...791..121M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.044 0.0224 0.0224 Masiero 2017AJ....154..168M NEATM
0.055 0.0110 0.0110 Ali-Lagoa 2018A&A...612A..85A NEATM
0.057 0.0072 0.0072 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.059 0.0337 0.0337 Masiero 2017AJ....154..168M NEATM
0.060 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.063 0.0250 0.0250 Masiero 2011ApJ...741...68M NEATM
0.065 0.0130 0.0130 Ali-Lagoa 2018A&A...612A..85A NEATM
0.066 0.0043 0.0043 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.067 0.0030 0.0030 Tedesco 2002AJ....123.1056T STM
0.074 0.0290 0.0480 Masiero 2021PSJ.....2..162M NEATM
0.080 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.090 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
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
7.98 MPC-2023-12-04 MPC-2023-12-04 Phot