1999 XM221

1999XM221, 1998 SR104, 1998SR104, 41329, J98SA4R, J99XM1M

All data for this body: [vot]

MPC data
Name (number) 1999 XM221 (41329)
a 3.48894
e 0.06498
i / sin(i) 11.2302 / 0.19475
q 3.26223
Q 3.71566
ω 274.6816
Node 36.6655
m 345.2816
n 0.1512
Epoch 2460200.5
nobs 1504
nopp 22
Years observed 1996-2023
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.495
ep 0.047
sin(ip) 0.188
Value Standard error
G 0.150
H 13.590
Mass
D 12.69 0.330
pV 0.052 0.0069
Rotational Period 32.813
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.4949 0.0473 0.1880 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.69 0.330 0.330 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.052 0.0069 0.0069 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
13.59 MPC-2023-12-04 MPC-2023-12-04 Phot
Period data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
32.81 Durech 2023A&A...675A..24D Model