2000 SM221
2000SM221, 1998 DH2, 1998DH2, 38923, J98D02H, K00SM1M
All data for this body: [vot]
MPC data
| Name (number) |
2000 SM221 (38923) |
| a |
2.66452 |
| e |
0.12295 |
| i / sin(i) |
11.0991 /
0.19251
|
| q |
2.33691
|
| Q |
2.99213
|
| ω |
259.3032 |
| Node |
87.5163 |
| m |
271.2959 |
| n |
0.2266 |
| Epoch |
2460800.5 |
| nobs |
2180 |
| nopp |
22 |
| Years observed |
1998-2025 |
| rms |
0.75 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.664 |
|
| ep |
0.083 |
|
| sin(ip) |
0.176 |
|
| G |
0.150 |
|
| H |
14.670 |
|
| Mass |
|
|
| D |
3.29 |
0.921 |
| pV |
0.310 |
0.2251 |
|
Value |
| Rotational Period |
7.890 |
| Period quality |
1 |
| Spectral Class |
S |
| Spectral Class Score |
5.592 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6640 |
0.0834 |
0.1762 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 3.29 |
0.921 |
0.921 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.310 |
0.2251 |
0.2251 |
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 |
| 14.67 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 7.893 |
1 |
Synodic |
Waszczak |
2015AJ....150...75W |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
|
0.932 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |