1981 EC28
1981EC28, 1999 BU8, 1999BU8, 32759, J81E28C, J99B08U
All data for this body: [vot]
MPC data
| Name (number) |
1981 EC28 (32759) |
| a |
2.37268 |
| e |
0.14930 |
| i / sin(i) |
4.2234 /
0.07365
|
| q |
2.01843
|
| Q |
2.72692
|
| ω |
198.7832 |
| Node |
12.2088 |
| m |
5.3060 |
| n |
0.2697 |
| Epoch |
2460800.5 |
| nobs |
1133 |
| nopp |
19 |
| Years observed |
1981-2025 |
| rms |
0.80 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.372 |
|
| ep |
0.183 |
|
| sin(ip) |
0.071 |
|
| G |
0.150 |
|
| H |
16.090 |
|
| Mass |
|
|
| D |
1.55 |
0.483 |
| pV |
0.421 |
0.2062 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
3.643 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3722 |
0.1826 |
0.0713 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 1.55 |
0.483 |
0.483 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.421 |
0.2062 |
0.2062 |
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 |
| 16.09 |
|
|
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 |
0.6071 |
0.6071 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| X |
|
0.230 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |