1997 GR20
1997GR20, 1990 QH19, 1990QH19, 1993 FW78, 1993FW78, 43980, J90Q19H, J93F78W, J97G20R
All data for this body: [vot]
MPC data
| Name (number) |
1997 GR20 (43980) |
| a |
2.51793 |
| e |
0.14324 |
| i / sin(i) |
1.1597 /
0.02024
|
| q |
2.15726
|
| Q |
2.87860
|
| ω |
293.3061 |
| Node |
28.8512 |
| m |
255.3111 |
| n |
0.2467 |
| Epoch |
2460800.5 |
| nobs |
1450 |
| nopp |
24 |
| Years observed |
1990-2025 |
| rms |
0.81 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.515 |
|
| ep |
0.130 |
|
| sin(ip) |
0.019 |
|
| G |
0.150 |
|
| H |
15.890 |
|
| Mass |
|
|
| D |
1.69 |
0.273 |
| pV |
0.358 |
0.1682 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5147 |
0.1302 |
0.0186 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 1.69 |
0.273 |
0.273 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.358 |
0.1682 |
0.1682 |
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 |
| 15.89 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |