1981 ET18
1981ET18, 1998 FR53, 1998FR53, 35027, J81E18T, J98F53R
All data for this body: [vot]
MPC data
| Name (number) |
1981 ET18 (35027) |
| a |
2.61418 |
| e |
0.17373 |
| i / sin(i) |
4.0471 /
0.07058
|
| q |
2.16003
|
| Q |
3.06833
|
| ω |
140.3523 |
| Node |
341.3403 |
| m |
194.1414 |
| n |
0.2332 |
| Epoch |
2460800.5 |
| nobs |
1075 |
| nopp |
20 |
| Years observed |
1979-2025 |
| rms |
0.77 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.615 |
|
| ep |
0.185 |
|
| sin(ip) |
0.077 |
|
| G |
0.150 |
|
| H |
15.730 |
|
| Mass |
|
|
| D |
1.99 |
0.447 |
| pV |
0.307 |
0.1208 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
2.425 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6155 |
0.1846 |
0.0773 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 1.99 |
0.447 |
0.447 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.307 |
0.1208 |
0.1208 |
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 |
| 15.73 |
|
|
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 |
S |
0.4041 |
0.4041 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |