1991 RR9
1991RR9, 16548, 1998 QS7, 1998QS7, J91R09R, J98Q07S
All data for this body: [vot]
MPC data
| Name (number) |
1991 RR9 (16548) |
| a |
2.34052 |
| e |
0.25111 |
| i / sin(i) |
3.2890 /
0.05737
|
| q |
1.75278
|
| Q |
2.92825
|
| ω |
6.2999 |
| Node |
346.9244 |
| m |
141.6419 |
| n |
0.2753 |
| Epoch |
2460800.5 |
| nobs |
1988 |
| nopp |
21 |
| Years observed |
1976-2025 |
| rms |
0.79 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.341 |
|
| ep |
0.209 |
|
| sin(ip) |
0.062 |
|
| G |
0.150 |
|
| H |
15.170 |
|
| Mass |
|
|
| D |
3.24 |
0.129 |
| pV |
0.185 |
0.0437 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3415 |
0.2089 |
0.0616 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 3.24 |
0.129 |
0.129 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.185 |
0.0437 |
0.0437 |
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 |
| 15.17 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |