Halley

02688, 1955 QN1, 1955QN1, 1978 SH6, 1978SH6, 1978 TE9, 1978TE9, 1978 UO, 1978UO, 1982 HG1, 1982HG1, J55Q01N, J78S06H, J78T09E, J78U00O, J82H01G

All data for this body: [vot]

MPC data
Name (number) Halley (2688)
a 3.17490
e 0.14493
i / sin(i) 3.4493 / 0.06017
q 2.71476
Q 3.63505
ω 189.6256
Node 95.1588
m 81.3792
n 0.1742
Epoch 2460200.5
nobs 4292
nopp 31
Years observed 1950-2023
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.157
ep 0.161
sin(ip) 0.038
Value Standard error
G 0.150
H 11.880
Mass
D 22.67 0.081
pV 0.082 0.0071
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 602 Themis 0.4300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1572 0.1612 0.0379 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
19.61 1.320 1.320 Usui 2011PASJ...63.1117U NEATM
20.10 4.020 4.020 Ali-Lagoa 2018A&A...612A..85A NEATM
21.52 0.140 0.140 Masiero 2014ApJ...791..121M NEATM
22.34 0.199 0.199 Masiero 2011ApJ...741...68M NEATM
23.08 0.290 0.290 Masiero 2014ApJ...791..121M NEATM
23.69 0.127 0.127 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.072 0.0172 0.0172 Masiero 2011ApJ...741...68M NEATM
0.080 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.081 0.0171 0.0171 Masiero 2011ApJ...741...68M NEATM
0.094 0.0380 0.0380 Ali-Lagoa 2018A&A...612A..85A NEATM
0.100 0.0200 0.0200 Masiero 2014ApJ...791..121M 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
11.88 MPC-2023-12-04 MPC-2023-12-04 Phot