| Minorplanet: | yes |
| Background: |
|
| 903 Nealley | |
| Mpc Name: | (903) Nealley |
| Alt Names: | 1918 EM |
| Discovered: | 13 September 1918 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.044562 |
| Semimajor: | 3.2377AU |
| Perihelion: | 3.0934AU |
| Aphelion: | 3.3819abbr=onNaNabbr=on |
| Period: | 5.83 yr (2127.9 d) |
| Inclination: | 11.781° |
| Asc Node: | 159.404° |
| Arg Peri: | 235.383° |
| Mean Motion: | / day |
| Orbit Ref: | [1] |
| Observation Arc: | 97.59 yr (35646 days) |
| Uncertainty: | 0 |
| Abs Magnitude: | 10.0 |
| Rotation: | 21.6abbr=onNaNabbr=on |
| Moid: | 2.11158AU |
| Jupiter Moid: | 1.84491AU |
| Tisserand: | 3.150 |
903 Nealley is a minor planet orbiting the Sun. The semi-major axis of the orbit of 903 Nealley lies just inside the Hecuba gap, located at 3.27 AU.