1999 SY9
1999SY9, 2000 XW51, 2000XW51, 38444, J99S09Y, K00X51W
All data for this body: [vot]
MPC data
| Name (number) |
1999 SY9 (38444) |
| a |
2.60946 |
| e |
0.11904 |
| i / sin(i) |
7.9631 /
0.13854
|
| q |
2.29881
|
| Q |
2.92009
|
| ω |
268.2732 |
| Node |
33.6537 |
| m |
52.9101 |
| n |
0.2338 |
| Epoch |
2460800.5 |
| nobs |
1092 |
| nopp |
21 |
| Years observed |
1994-2025 |
| rms |
0.84 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.610 |
|
| ep |
0.098 |
|
| sin(ip) |
0.131 |
|
| G |
0.150 |
|
| H |
15.230 |
|
| Mass |
|
|
| D |
4.96 |
0.271 |
| pV |
0.072 |
0.0095 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
C |
| Spectral Class Score |
0.878 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6102 |
0.0981 |
0.1314 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.96 |
0.271 |
0.271 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.072 |
0.0095 |
0.0095 |
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 |
| 15.23 |
|
|
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 |
| C |
C |
0.1464 |
0.1464 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |