Johnen

08581, 1977 XS, 1977XS, 1996 YO2, 1996YO2, J77X00S, J96Y02O

All data for this body: [vot]

MPC data
Name (number) Johnen (8581)
a 2.83513
e 0.04314
i / sin(i) 3.1975 / 0.05578
q 2.71283
Q 2.95743
ω 31.1668
Node 74.9256
m 300.2246
n 0.2065
Epoch 2460800.5
nobs 3333
nopp 27
Years observed 1977-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.837
ep 0.059
sin(ip) 0.038
G 0.150
H 13.600
Mass
D 5.84 0.158
pV 0.248 0.0392
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 12.326
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis -0.4100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8366 0.0588 0.0381 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.84 0.158 0.158 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.248 0.0392 0.0392 Masiero 2011ApJ...741...68M 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
13.60 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
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.44 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.7526 0.8020 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.8218 0.8020 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.178 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT