Hempel

09820, 1996 CS2, 1996CS2, 3064 T-1, 3064T-1, J96C02S, T1S3064

All data for this body: [vot]

MPC data
Name (number) Hempel (9820)
a 2.35125
e 0.14192
i / sin(i) 0.2708 / 0.00473
q 2.01756
Q 2.68494
ω 267.9036
Node 274.8753
m 5.6502
n 0.2734
Epoch 2460800.5
nobs 2509
nopp 24
Years observed 1971-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.351
ep 0.180
sin(ip) 0.021
G 0.150
H 15.190
Mass
D 2.31 0.494
pV 0.274 0.1000
Value
Rotational Period 0.900
Period quality
Spectral Class S
Spectral Class Score 11.358
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3511 0.1800 0.0208 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.31 0.494 0.494 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.274 0.1000 0.1000 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
15.19 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
0.97 Synodic Erasmus 2018ApJS..237...19E Lightcurve
0.97 Synodic Erasmus 2019ApJS..242...15E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.779 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S X 0.556000 0.267000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT
S X 0.558000 0.262000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT