2000 HU21

2000HU21, 1981 EX39, 1981EX39, 43307, J81E39X, K00H21U

All data for this body: [vot]

MPC data
Name (number) 2000 HU21 (43307)
a 2.39062
e 0.18875
i / sin(i) 1.7157 / 0.02994
q 1.93940
Q 2.84185
ω 120.0025
Node 235.9751
m 157.2196
n 0.2666
Epoch 2460800.5
nobs 1856
nopp 22
Years observed 1981-2025
rms 0.78
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.391
ep 0.149
sin(ip) 0.046
G 0.150
H 15.290
Mass
D 5.56 0.123
pV 0.058 0.0075
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.526
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
44 Nysa 405 Nysa-Polana -0.3200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3914 0.1490 0.0464 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.12 0.884 0.884 Masiero 2017AJ....154..168M NEATM
4.40 0.890 0.890 Masiero 2021PSJ.....2..162M NEATM
5.62 0.125 0.125 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.056 0.0078 0.0078 Masiero 2011ApJ...741...68M NEATM
0.083 0.0320 0.0510 Masiero 2021PSJ.....2..162M NEATM
0.095 0.0393 0.0393 Masiero 2017AJ....154..168M 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
15.29 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.921 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Ds Ad None None Movis NIR Popescu 2018A&A...617A..12P PHOT