101 Helena (Asteroid)
Finder chart
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom.
Click to enlarge.
From South El Monte , 101 Helena will become visible at around 21:17 (PDT), 25° above your southern horizon, as dusk fades to darkness. It will then sink towards the horizon, setting at 01:04.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
Name
101 Helena
|
Object type
Asteroid
|
Current position
| Computed for: | 04 July 2025 |
| Right ascension: | 14h33m [1] |
| Declination: | −29°50' [1] |
| Constellation: | Hydra |
| Magnitude: | 12.71 (V) [1] |
| Distance: | 1.81 AU 15.06 lightmin [1] |
| Angular motion (speed): | 18.68 arcmin/day[1] |
| Angular motion (pos ang): | 296.1° |
Orbital elements [1]
| Semi-major axis: | 2.58 AU |
| Eccentricity: | 0.140627 |
| Inclination: | 10.19° |
| Longitude ascending node: | 343.37° |
| Argument of perihelion: | 347.82° |
| Epoch of elements: | 25 January 2025 |
| Mean Anomaly at epoch: | 252.39° |
| Absolute mag (H): | 8.42 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 2.22 AU |
| Aphelion: | 2.95 AU |
| Orbital period: | 4.15 years |
Visibility from South El Monte
All times shown in South El Monte local time.