944 Hidalgo
| Discovery | |
|---|---|
| Discovered by | Walter Baade |
| Discovery date | 31 October 1920 |
| Designations | |
|
Named after
|
Miguel Hidalgo y Costilla |
| 1920 HZ | |
|
Jupiter-crosser asteroid, Saturn-crosser asteroid centaur |
|
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 32621 days (89.31 yr) |
| Aphelion | 9.5314 AU (1.42588 Tm) |
| Perihelion | 1.9438 AU (290.79 Gm) |
| 5.7376 AU (858.33 Gm) | |
| Eccentricity | 0.66122 |
| 13.74 yr (5019.89 d) | |
|
Average orbital speed
|
12.43 km/s |
| 287.041° | |
| 0° 4m 18.174s / day | |
| Inclination | 42.522° |
| 21.435° | |
| 56.741° | |
| Earth MOID | 1.1468 AU (171.56 Gm) |
| Jupiter MOID | 0.335985 AU (50.2626 Gm) |
| Jupiter Tisserand parameter | 2.068 |
| Physical characteristics | |
| Dimensions | 38 kmH |
|
Mean radius
|
19 km |
| 10.063 h (0.4193 d) | |
| 0.06 | |
| Temperature | ~116 K |
| D-type asteroid | |
| 10.77 | |
944 Hidalgo (/hᵻˈdælɡoʊ/ hi-DAL-goh) is a small Solar System body with a semi-major axis beyond Jupiter's and an orbital period of 13.77 years. This makes it a centaur, the first to be discovered, but it was discovered in 1920 and has hence traditionally been called an asteroid. Hidalgo is estimated to be 38 km in diameter.
944 Hidalgo was discovered by Walter Baade on October 31, 1920 at Bergedorf Observatory near Hamburg, Germany. It is named for Miguel Hidalgo y Costilla, who was responsible for declaring Mexico's independence in 1810 and the ensuing Mexican War of Independence. German astronomers who were in Mexico to observe a total eclipse on September 10, 1923, had an audience with President Álvaro Obregón. During this meeting, they asked his permission to name the asteroid after Hidalgo.
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