1999 HP4
1999HP4, 56218, J99H04P
All data for this body: [vot]
MPC data
| Name (number) |
1999 HP4 (56218) |
| a |
2.57391 |
| e |
0.02102 |
| i / sin(i) |
10.6040 /
0.18402
|
| q |
2.51980
|
| Q |
2.62803
|
| ω |
223.8208 |
| Node |
35.7561 |
| m |
55.4541 |
| n |
0.2387 |
| Epoch |
2460800.5 |
| nobs |
2271 |
| nopp |
20 |
| Years observed |
1999-2025 |
| rms |
0.75 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.574 |
|
| ep |
0.048 |
|
| sin(ip) |
0.176 |
|
| G |
0.150 |
|
| H |
14.510 |
|
| Mass |
|
|
| D |
3.23 |
0.432 |
| pV |
0.322 |
0.1504 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
5.628 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5737 |
0.0481 |
0.1756 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 3.23 |
0.432 |
0.432 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.322 |
0.1504 |
0.1504 |
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 |
| 14.51 |
|
|
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 |
|
0.938 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |