| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg |
| Discovery date | 11 July 1918 |
| Designations | |
| (895) Helio | |
| Pronunciation | /ˈhiːlioʊ/[1] |
| 1918 DU | |
| Adjectives | Helian/ˈhiːliən/ |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.79 yr (40100 days) |
| Aphelion | 3.6686 AU (548.81 Gm) |
| Perihelion | 2.7362 AU (409.33 Gm) |
| 3.2024 AU (479.07 Gm) | |
| Eccentricity | 0.14558 |
| 5.73yr (2093.2d) | |
| 241.229° | |
| 0° 10m 19.164s / day | |
| Inclination | 26.077° |
| 264.704° | |
| 178.108° | |
| Earth MOID | 1.75069 AU (261.899 Gm) |
| Jupiter MOID | 1.60187 AU (239.636 Gm) |
| TJupiter | 3.019 |
| Physical characteristics | |
| 148.43 ± 5.02 km[3] 109.568±1.987km[2] | |
| Mass | (9.87 ± 6.05) × 1018 kg[3] |
Meandensity | 5.76 ± 3.58 g/cm3[3] |
| 9.3959 h (0.39150 d) | |
| 9.3959 h[2] | |
| 0.0420±0.002[2] | |
| FCB/B[2] | |
| 8.3[2] | |
895 Helio is a large dark outermain-beltasteroid[4] about 150 km in diameter. It was discovered on 11 July 1918 by German astronomerMax Wolf.[2] It is named after the elementhelium, whose spectrum was studied byFriedrich Paschen andCarl David Tolmé Runge, with the asteroid being named by Paschen at Wolf's request; the namehelium itself comes fromHelios, theGreek god of theSun.
This is aB-type asteroid.[2] The best spectral analog for 895 Heloi is the iron richpyroxene mineralhedenbergite. It shares similar orbital properties with the31 Euphrosyneasteroid family, but is most likely an interloper.[5]Light curve analysis provides a rotation period of 9.4 hours.[4]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byadding missing information. |
