1999 XM21

1999XM21, D0098, J99X21M

All data for this body: [vot]

MPC data
Name (number) 1999 XM21 (130098)
a 2.79693
e 0.19192
i / sin(i) 7.2841 / 0.12679
q 2.26015
Q 3.33370
ω 268.8915
Node 188.9652
m 4.2586
n 0.2107
Epoch 2460200.5
nobs 799
nopp 16
Years observed 1999-2023
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Dora (668)
 
ap 2.797
ep 0.195
sin(ip) 0.136
Value Standard error
G 0.150
H 15.680
Mass
D 5.09 0.272
pV 0.052 0.0160
Rotational Period
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
668 Dora 512 Dora Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7969 0.1949 0.1356 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.09 0.272 0.272 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.052 0.0160 0.0160 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
15.68 MPC-2023-12-04 MPC-2023-12-04 Phot