2003 HD21

2003HD21, B4745, K03H21D

All data for this body: [vot]

MPC data
Name (number) 2003 HD21 (114745)
a 2.28814
e 0.14396
i / sin(i) 4.3683 / 0.07617
q 1.95874
Q 2.61753
ω 282.5787
Node 6.7403
m 68.0006
n 0.2848
Epoch 2460800.5
nobs 846
nopp 19
Years observed 1997-2025
rms 0.83
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.289
ep 0.121
sin(ip) 0.075
G 0.150
H 16.410
Mass
D 1.71 0.354
pV 0.219 0.0608
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 2.164
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.2600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2886 0.1207 0.0755 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.71 0.354 0.354 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.219 0.0608 0.0608 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
16.41 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
A 0.206 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.3606 0.3606 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT