| Ephemeris for Helio | |
| Encyclopedia Mythica Search for Helio | |
| JPL Small-Body Database Browser (may be naming citation info at bottom) for Helio | |
| Nasa Orbit Applet for Helio | |
| Wikipedia Search for Helio | |
| Google Search for Helio | |
| Biography Search for Helio | |
| Merriam Webster Search for Helio | |