Egal

1998 SW66, 1998SW66, 2002 FQ35, 2002FQ35, 99581, J98S66W, K02F35Q

All data for this body: [vot]

MPC data
Name (number) Egal (99581)
a 3.15644
e 0.31701
i / sin(i) 24.2545 / 0.41079
q 2.15582
Q 4.15706
ω 90.3315
Node 194.5817
m 334.9528
n 0.1758
Epoch 2460800.5
nobs 1805
nopp 20
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Euphrosyne (31)
 
ap 3.168
ep 0.234
sin(ip) 0.449
G 0.150
H 14.450
Mass
D 7.84 2.800
pV 0.048 0.0315
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.832
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
31 Euphrosyne 0 Euphrosyne Novakovic 2019EPSC...13.1671N HCM
31 Euphrosyne 901 Euphrosyne Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1681 0.2338 0.4488 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.84 2.800 2.800 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.048 0.0220 0.0410 Masiero 2021PSJ.....2..162M 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
14.45 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D X 0.0382 0.2910 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 0.972 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.3837 0.2910 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT