1999 JH81
1999JH81, 19560, J99J81H
All data for this body: [vot]
MPC data
| Name (number) |
1999 JH81 (19560) |
| a |
2.59869 |
| e |
0.13978 |
| i / sin(i) |
12.8915 /
0.22311
|
| q |
2.23543
|
| Q |
2.96194
|
| ω |
49.0145 |
| Node |
238.3529 |
| m |
61.4930 |
| n |
0.2353 |
| Epoch |
2460800.5 |
| nobs |
3767 |
| nopp |
24 |
| Years observed |
1991-2025 |
| rms |
0.63 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.599 |
|
| ep |
0.129 |
|
| sin(ip) |
0.236 |
|
| G |
0.150 |
|
| H |
13.600 |
|
| Mass |
|
|
| D |
5.17 |
0.197 |
| pV |
0.263 |
0.0298 |
|
Value |
| Rotational Period |
4.601 |
| Period quality |
2 |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5991 |
0.1294 |
0.2363 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 5.17 |
0.197 |
0.197 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.263 |
0.0298 |
0.0298 |
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 |
| 13.60 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 4.6014 |
2 |
Synodic |
Pravec |
LCDB |
Lightcurve |
| 9.19466 |
2 |
Synodic |
Pal |
2020ApJS..247...26P |
Lightcurve |