2000 HX21

2000HX21, 2001 SW21, 2001SW21, 81543, K00H21X, K01S21W

All data for this body: [vot]

MPC data
Name (number) 2000 HX21 (81543)
a 2.77791
e 0.21041
i / sin(i) 8.0744 / 0.14046
q 2.19341
Q 3.36241
ω 256.7039
Node 40.4794
m 92.1497
n 0.2129
Epoch 2460800.5
nobs 1935
nopp 20
Years observed 1995-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Dora (668)
 
ap 2.778
ep 0.195
sin(ip) 0.137
G 0.150
H 14.510
Mass
D 8.18 0.074
pV 0.057 0.0068
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
668 Dora 0 Dora Novakovic 2019EPSC...13.1671N HCM
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
2.7780 0.1953 0.1368 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.42 1.930 1.930 Masiero 2021PSJ.....2..162M NEATM
6.82 1.290 1.290 Masiero 2021PSJ.....2..162M NEATM
8.19 0.074 0.074 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.057 0.0069 0.0069 Masiero 2011ApJ...741...68M NEATM
0.066 0.0360 0.0790 Masiero 2021PSJ.....2..162M NEATM
0.075 0.0300 0.0520 Masiero 2021PSJ.....2..162M 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
14.51 MPC-2023-12-04 MPC-2023-12-04 Phot