1999XD221

1979HH1, 1998VF28, 25581, J79H01H, J98V28F, J99XM1D

All data for this body: [vot]

MPC data
Name (number) 1999XD221 (25581)
Packed designation 25581
a 2.64604
e 0.09397
i / sin(i) 10.8316 / 0.18792
q 2.39740
Q 2.89468
ω 335.4477
Node 253.1463
m 323.1559
n 0.2290
Epoch 2459600.5
nobs 2158
nopp 19
Years observed 1979-2021
rms 0.45
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.646
ep 0.120
sin(ip) 0.204
Value Standard error
G 0.150
H 13.220
Mass
D 9.12 0.070
pV 0.090 0.0086
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6464 0.1202 0.2038 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.62 0.170 0.170 Masiero 2014ApJ...791..121M NEATM
9.10 0.078 0.078 Masiero 2011ApJ...741...68M NEATM
12.08 0.380 0.380 Masiero 2012ApJ...759L...8M NEATM
14.54 4.210 4.210 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM
0.076 0.0100 0.0100 Masiero 2012ApJ...759L...8M NEATM
0.135 0.0197 0.0197 Masiero 2011ApJ...741...68M NEATM
0.220 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.22 MPC-2022-01-18 MPC-2022-01-18 Phot