1996 HH21

1996HH21, 1991 PC27, 1991PC27, 2000 CX97, 2000CX97, 69435, J91P27C, J96H21H, K00C97X

All data for this body: [vot]

MPC data
Name (number) 1996 HH21 (69435)
a 3.18363
e 0.19255
i / sin(i) 2.3582 / 0.04115
q 2.57063
Q 3.79663
ω 190.4044
Node 104.9625
m 353.0230
n 0.1735
Epoch 2460800.5
nobs 1117
nopp 23
Years observed 1991-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.194
ep 0.177
sin(ip) 0.019
G 0.150
H 14.550
Mass
D 6.01 2.121
pV 0.071 0.0229
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.430
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.3400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1940 0.1766 0.0188 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.01 2.121 2.121 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.071 0.0229 0.0229 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
14.55 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 C 0.0435 0.0435 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 0.905 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT