1999 YR4
1999YR4, 1990 ES, 1990ES, 1998 QT93, 1998QT93, 49976, J90E00S, J98Q93T, J99Y04R
All data for this body: [vot]
MPC data
| Name (number) |
1999 YR4 (49976) |
| a |
2.32288 |
| e |
0.10852 |
| i / sin(i) |
7.1527 /
0.12452
|
| q |
2.07081
|
| Q |
2.57495
|
| ω |
8.0579 |
| Node |
281.5661 |
| m |
59.4662 |
| n |
0.2784 |
| Epoch |
2460200.5 |
| nobs |
1456 |
| nopp |
20 |
| Years observed |
1990-2023 |
| rms |
0.67 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.322 |
|
| ep |
0.088 |
|
| sin(ip) |
0.135 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
15.600 |
|
| Mass |
|
|
| D |
2.37 |
0.790 |
| pV |
0.262 |
0.1407 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3225 |
0.0885 |
0.1347 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Oct-2022 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 2.37 |
0.790 |
0.790 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.262 |
0.1407 |
0.1407 |
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 |
| 15.60 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |