1997 HE
1997HE, 1999 TY177, 1999TY177, 39777, J97H00E, J99TH7Y
All data for this body: [vot]
MPC data
| Name (number) |
1997 HE (39777) |
| a |
2.79891 |
| e |
0.11936 |
| i / sin(i) |
7.4387 /
0.12947
|
| q |
2.46484
|
| Q |
3.13298
|
| ω |
149.0957 |
| Node |
201.0887 |
| m |
204.6963 |
| n |
0.2105 |
| Epoch |
2460800.5 |
| nobs |
2097 |
| nopp |
21 |
| Years observed |
1997-2025 |
| rms |
0.74 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.800 |
|
| ep |
0.081 |
|
| sin(ip) |
0.135 |
|
| G |
0.150 |
|
| H |
14.750 |
|
| Mass |
|
|
| D |
4.20 |
0.805 |
| pV |
0.159 |
0.1253 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
13.211 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.8003 |
0.0811 |
0.1353 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.20 |
0.805 |
0.805 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.159 |
0.1253 |
0.1253 |
Masiero |
2011ApJ...741...68M |
NEATM |
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 |
| 14.75 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
|
0.795 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |
| S |
S |
0.5314 |
0.8000 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| S |
S |
0.8755 |
0.8000 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |