1999 XN18

1999XN18, 41227, J99X18N

All data for this body: [vot]

MPC data
Name (number) 1999 XN18 (41227)
a 2.90420
e 0.09016
i / sin(i) 3.3481 / 0.05840
q 2.64234
Q 3.16605
ω 301.6337
Node 81.2437
m 54.7993
n 0.1991
Epoch 2460800.5
nobs 2498
nopp 20
Years observed 1997-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.902
ep 0.054
sin(ip) 0.040
G 0.150
H 14.230
Mass
D 4.31 0.195
pV 0.262 0.0635
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
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 0.2400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9018 0.0540 0.0395 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.31 0.195 0.195 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.262 0.0635 0.0635 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
14.23 MPC-2023-12-04 MPC-2023-12-04 Phot