1998 QA21
1998QA21, 74098, J98Q21A
All data for this body: [vot]
MPC data
| Name (number) |
1998 QA21 (74098) |
| a |
2.56694 |
| e |
0.11562 |
| i / sin(i) |
15.1742 /
0.26176
|
| q |
2.27015
|
| Q |
2.86374
|
| ω |
134.9577 |
| Node |
150.6882 |
| m |
70.0318 |
| n |
0.2397 |
| Epoch |
2460200.5 |
| nobs |
1979 |
| nopp |
19 |
| Years observed |
1998-2023 |
| rms |
0.66 |
Best values
|
Value |
Standard error |
| Parent |
Maria (170) |
|
| |
|
|
| ap |
2.566 |
|
| ep |
0.095 |
|
| sin(ip) |
0.255 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
14.770 |
|
| Mass |
|
|
| D |
3.02 |
0.576 |
| pV |
0.405 |
0.0851 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 170 |
Maria |
506 |
Maria |
0.1000 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5663 |
0.0951 |
0.2554 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Oct-2022 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 3.02 |
0.576 |
0.576 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.405 |
0.0851 |
0.0851 |
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 |
| 14.77 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |