1999 XW171

1999XW171, 25557, J99XH1W

All data for this body: [vot]

MPC data
Name (number) 1999 XW171 (25557)
a 2.57375
e 0.19818
i / sin(i) 13.6305 / 0.23566
q 2.06368
Q 3.08382
ω 294.0222
Node 75.6722
m 117.6098
n 0.2387
Epoch 2460800.5
nobs 2773
nopp 21
Years observed 1982-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.575
ep 0.151
sin(ip) 0.223
G 0.150
H 14.150
Mass
D 4.11 0.810
pV 0.316 0.2148
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
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.6000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5749 0.1512 0.2225 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.11 0.810 0.810 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.316 0.2148 0.2148 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
14.15 MPC-2023-12-04 MPC-2023-12-04 Phot