| Country | England |
| State or Province | Essex |
| City | Horndon-on-the-Hill |
| Date | 11/1/86 |
| Time | 6:30 PM GMT |
| Weather | Clear |
| Duration | 2 minutes |
| Witnesses (Number) | 1 |
| Distance | 40 feet |
| Solid Object | Yes |
| Size | Length of a football pitch |
| Shape | Triangular |
| Shape Details | Not Specified |
| Metallic/Shiny | Yes |
| Color | Dark grey/black |
| Glow/Halo | No |
| Lights | Yes |
| How Many Lights | Quite a few but very small |
| How Bright | Not very bright |
| Light Coloration | Various |
| Sound | Very low humming noise, almost imperceptible |
| Motion/Speed | Totally stationary just above roof height |
| Number of Objects | One |
| Coordination/Communication | Not Specified |
| Windows | No |
| Occupants | No |
| Description | In November 1986, in Horndon-on-the-Hill, Essex, England, a witness observed a stationary, triangular, dark grey/black craft with small, variously colored lights. It hovered at roof height, emitting a low humming noise. The witness, a recruitment consultant, felt privileged by the sighting and theorized it could be either advanced US stealth technology or an alien craft, noting its futuristic appearance and silent hovering capabilities, contrasting with known aircraft like Harrier Jump Jets. |
| Nearby Landmarks | Shell Oil Refinery, River Thames |
| Latitude | 51.52389 |
| Longitude | 0.403 |
| Altitude | 50 feet |
| Propulsion | No |
| Advanced Capabilities | Yes |
| Visible Payload | No |
| Radar | Not Specified |
| Signatures | No |
| Awareness | No |
| Aggression | No |
| Health Effects | None related |
| Physical/Environmental Effects | None seen |
| Animal Disturbance | None seen |
| Witness Feelings | Privileged |
| Witness Assessment | Possible observation of the nearby oil refinery |
| Additional Info | Uncertain about the exact date of the sighting, never officially reported it. |
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