Echo

00060, 1860 RB, 1860RB, 1899 EB, 1899EB, I60R00B, I99E00B

All data for this body: [vot]

MPC data
Name (number) Echo (60)
a 2.39241
e 0.18504
i / sin(i) 3.6012 / 0.06281
q 1.94972
Q 2.83510
ω 270.9159
Node 191.5394
m 274.9896
n 0.2663
Epoch 2460200.5
nobs 6609
nopp 73
Years observed 1861-2023
rms 0.47
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.393
ep 0.202
sin(ip) 0.071
Value Standard error
G 0.150
H 8.650
Mass 2.470e+17 2.400e+16
D 48.04 0.479
pV 0.251 0.0098
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3931 0.2021 0.0714 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.1500e+17 Folkner 2009IPNPR.178C...1F Ephem
3.4200e+17 Folkner 2014IPNPR.196C...1F Ephem
8.3978e+16 4.1562e+16 4.1562e+16 Fienga INPOP19a Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
43.22 0.570 0.570 Masiero 2014ApJ...791..121M NEATM
58.95 1.240 1.240 Usui 2011PASJ...63.1117U NEATM
59.36 2.991 2.991 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
59.75 5.980 5.980 Ali-Lagoa 2018A&A...612A..85A NEATM
60.00 3.519 3.519 Masiero 2011ApJ...741...68M NEATM
60.20 1.800 1.800 Tedesco 2002AJ....123.1056T STM
63.13 3.260 3.260 Ryan&Woodward 2010AJ....140..933R IRAS-STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.191 0.0245 0.0245 Masiero 2011ApJ...741...68M NEATM
0.208 0.0420 0.0420 Ali-Lagoa 2018A&A...612A..85A NEATM
0.232 0.0239 0.0239 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.254 0.0160 0.0160 Tedesco 2002AJ....123.1056T STM
0.262 0.0264 0.0264 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.370 0.0300 0.0300 Masiero 2014ApJ...791..121M 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
8.65 MPC-2023-12-04 MPC-2023-12-04 Phot