1999 HD2

1999HD2, 18758, 1982 BY9, 1982BY9, 1987 SQ2, 1987SQ2, 1992 EU4, 1992EU4, J82B09Y, J87S02Q, J92E04U, J99H02D

All data for this body: [vot]

MPC data
Name (number) 1999 HD2 (18758)
a 2.18849
e 0.18463
i / sin(i) 5.7400 / 0.10001
q 1.78444
Q 2.59254
ω 247.6068
Node 128.8518
m 214.2153
n 0.3044
Epoch 2460800.5
nobs 2405
nopp 21
Years observed 1982-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.188
ep 0.147
sin(ip) 0.094
G 0.150
H 14.950
Mass
D
pV
Value
Rotational Period 5.130
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 0 Flora Novakovic 2019EPSC...13.1671N HCM
8 Flora 402 Flora -0.0800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1885 0.1466 0.0942 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
14.95 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.132 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
5.13282 2 Sidereal Durech 2023A&A...675A..24D Model