1998 SP21
1998SP21, 1987 SV24, 1987SV24, 1996 BQ15, 1996BQ15, 26279, J87S24V, J96B15Q, J98S21P
All data for this body: [vot]
MPC data
| Name (number) |
1998 SP21 (26279) |
| a |
2.36700 |
| e |
0.23587 |
| i / sin(i) |
1.9060 /
0.03326
|
| q |
1.80869
|
| Q |
2.92532
|
| ω |
113.4505 |
| Node |
236.9249 |
| m |
125.3598 |
| n |
0.2706 |
| Epoch |
2460800.5 |
| nobs |
1461 |
| nopp |
22 |
| Years observed |
1987-2025 |
| rms |
0.85 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.368 |
|
| ep |
0.194 |
|
| sin(ip) |
0.051 |
|
| G |
0.150 |
|
| H |
15.770 |
|
| Mass |
|
|
| D |
2.35 |
0.514 |
| pV |
0.168 |
0.1190 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
C |
| Spectral Class Score |
5.240 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3677 |
0.1938 |
0.0515 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 2.35 |
0.514 |
0.514 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.168 |
0.1190 |
0.1190 |
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 |
| 15.77 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |