1990 QS4
1990QS4, 16475, 1998 DN32, 1998DN32, 1999 GB18, 1999GB18, J90Q04S, J98D32N, J99G18B
All data for this body: [vot]
MPC data
| Name (number) |
1990 QS4 (16475) |
| a |
2.21647 |
| e |
0.11774 |
| i / sin(i) |
5.5242 /
0.09627
|
| q |
1.95550
|
| Q |
2.47744
|
| ω |
212.0590 |
| Node |
107.6176 |
| m |
197.4739 |
| n |
0.2987 |
| Epoch |
2460800.5 |
| nobs |
7655 |
| nopp |
24 |
| Years observed |
1954-2025 |
| rms |
0.48 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.217 |
|
| ep |
0.061 |
|
| sin(ip) |
0.090 |
|
| G |
0.150 |
|
| H |
14.670 |
|
| Mass |
|
|
| D |
4.38 |
1.280 |
| pV |
0.192 |
0.0850 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
5.798 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2169 |
0.0608 |
0.0903 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.38 |
1.280 |
1.280 |
Masiero |
2012ApJ...759L...8M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.192 |
0.0850 |
0.0850 |
Masiero |
2012ApJ...759L...8M |
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 |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
S |
0.9663 |
0.9663 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |