1998 SM121
1998SM121, 2000 EY91, 2000EY91, 49212, J98SC1M, K00E91Y
All data for this body: [vot]
MPC data
| Name (number) |
1998 SM121 (49212) |
| a |
2.29458 |
| e |
0.05572 |
| i / sin(i) |
3.9772 /
0.06936
|
| q |
2.16672
|
| Q |
2.42244
|
| ω |
240.9353 |
| Node |
258.1756 |
| m |
120.0723 |
| n |
0.2836 |
| Epoch |
2460800.5 |
| nobs |
2468 |
| nopp |
20 |
| Years observed |
1998-2025 |
| rms |
0.73 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.294 |
|
| ep |
0.099 |
|
| sin(ip) |
0.082 |
|
| G |
0.150 |
|
| H |
15.120 |
|
| Mass |
|
|
| D |
2.34 |
0.279 |
| pV |
0.388 |
0.1024 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2942 |
0.0994 |
0.0821 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 2.34 |
0.279 |
0.279 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.388 |
0.1024 |
0.1024 |
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 |
| 15.12 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |