117P/Helin-Roman-Alu
Basic Information of 117P/Helin-Roman-Alu
Orbital Elements
| Parameter | Value |
|---|---|
| Orbit type | P |
| Perihelion distance (AU) | 3.089470 |
| Eccentricity | 0.250838 |
| Inclination (deg) | 8.661800 |
| Longitude of ascending node (deg) | 58.785400 |
| Argument of perihelion (deg) | 224.923300 |
| Epoch | 2025-11-21T00:00:00.000 |
| Reference | MPEC 2025-W75, MPC orbital elements |
| Period (years) | 8.374567 |
Latest Perihelion
| Field | Value |
|---|---|
| Date (UTC) | 2030-11-24T12:01:09.781 |
| Period (years) | 8.374567 |
Magnitude
Magnitude Chart Placeholder
Ephemeris
| Date (UTC) | RA (J2000) | Dec (J2000) | Δ (AU) | Motion (arcsec/hr) | Dir (deg) | Nearest HIP | Dist (arcmin) |
|---|---|---|---|---|---|---|---|
| 2025-11-21 | 05:44:57.04 | +27:27:13.7 | 4.138 | 18.92 | 277.6 | HIP 27071 | 14.93 |
| 2025-11-22 | 05:44:23.23 | +27:28:13.6 | 4.132 | 19.25 | 277.3 | HIP 27016 | 12.93 |
| 2025-11-23 | 05:43:48.79 | +27:29:11.9 | 4.125 | 19.57 | 277.0 | HIP 27016 | 11.43 |
| 2025-11-24 | 05:43:13.76 | +27:30:08.8 | 4.120 | 19.87 | 276.7 | HIP 27016 | 14.65 |
| 2025-11-25 | 05:42:38.14 | +27:31:04.0 | 4.114 | 20.17 | 276.4 | HIP 26852 | 17.09 |
| 2025-11-26 | 05:42:01.98 | +27:31:57.7 | 4.109 | 20.45 | 276.1 | HIP 26852 | 14.28 |
| 2025-11-27 | 05:41:25.29 | +27:32:49.7 | 4.104 | 20.72 | 275.8 | HIP 26708 | 13.28 |
| 2025-11-28 | 05:40:48.09 | +27:33:40.0 | 4.099 | 20.97 | 275.6 | HIP 26708 | 7.90 |
| 2025-11-29 | 05:40:10.42 | +27:34:28.5 | 4.095 | 21.21 | 275.3 | HIP 26708 | 9.30 |
| 2025-11-30 | 05:39:32.31 | +27:35:15.3 | 4.091 | 21.43 | 275.1 | HIP 26708 | 15.92 |
| 2025-12-01 | 05:38:53.77 | +27:36:00.3 | 4.087 | 21.64 | 274.8 | HIP 26708 | 23.83 |
| 2025-12-02 | 05:38:14.83 | +27:36:43.5 | 4.083 | 21.83 | 274.6 | HIP 26351 | 27.66 |
| 2025-12-03 | 05:37:35.52 | +27:37:24.8 | 4.080 | 22.02 | 274.3 | HIP 26351 | 21.24 |
| 2025-12-04 | 05:36:55.88 | +27:38:04.2 | 4.077 | 22.18 | 274.1 | HIP 26291 | 13.47 |
| 2025-12-05 | 05:36:15.91 | +27:38:41.7 | 4.075 | 22.33 | 273.8 | HIP 26291 | 4.64 |
| 2025-12-06 | 05:35:35.66 | +27:39:17.3 | 4.073 | 22.47 | 273.6 | HIP 26291 | 4.42 |
| 2025-12-07 | 05:34:55.15 | +27:39:50.9 | 4.071 | 22.47 | 273.6 | HIP 26291 | 13.37 |