1997 ET4

1997ET4, 2002 CU161, 2002CU161, H8371, J97E04T, K02CG1U

All data for this body: [vot]

MPC data
Name (number) 1997 ET4 (178371)
a 3.10448
e 0.10493
i / sin(i) 5.4440 / 0.09487
q 2.77874
Q 3.43022
ω 127.1235
Node 7.1371
m 89.7230
n 0.1802
Epoch 2460800.5
nobs 376
nopp 16
Years observed 1997-2024
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.101
ep 0.134
sin(ip) 0.097
G 0.150
H 15.850
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class B
Spectral Class Score 1.888
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
10 Hygiea 0 Hygiea Novakovic 2019EPSC...13.1671N HCM
10 Hygiea 601 Hygiea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1006 0.1341 0.0971 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
15.85 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
B C 0.0158 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B C 0.2988 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C 0.22 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.0591 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.0928 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.0340 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.0556 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT