1998 HD40
1998HD40, 35581, J98H40D
All data for this body: [vot]
MPC data
| Name (number) |
1998 HD40 (35581) |
| a |
2.67504 |
| e |
0.15831 |
| i / sin(i) |
8.9805 /
0.15610
|
| q |
2.25156
|
| Q |
3.09851
|
| ω |
168.9432 |
| Node |
34.8400 |
| m |
63.0564 |
| n |
0.2253 |
| Epoch |
2460800.5 |
| nobs |
1642 |
| nopp |
20 |
| Years observed |
1991-2025 |
| rms |
0.79 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.676 |
|
| ep |
0.222 |
|
| sin(ip) |
0.144 |
|
| G |
0.150 |
|
| H |
14.780 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
5.000 |
| Period quality |
|
| Spectral Class |
S |
| Spectral Class Score |
5.784 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6761 |
0.2223 |
0.1440 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
G data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2023-12-94 |
MPC-2023-12-94 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 14.78 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 5.4 |
|
Synodic |
Erasmus |
2019ApJS..242...15E |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
|
0.964000 |
|
Bus-DeMeo |
VIS |
Erasmus |
2019ApJS..242...15E |
PHOT |