| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 9 July 2002 |
| Designations | |
| (89959) 2002 NT7 | |
| 2002 NT7 | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.68 yr (22,894 days) |
| Aphelion | 2.6529 AU |
| Perihelion | 0.8180 AU |
| 1.7355 AU | |
| Eccentricity | 0.5286 |
| 2.29 yr (835 days) | |
| 79.375° | |
| 0° 25m 51.96s / day | |
| Inclination | 42.333° |
| 132.08° | |
| 300.67° | |
| Earth MOID | 0.0004 AU (60,000 km; 37,000 mi) |
| Physical characteristics | |
| 1.407±0.085 km[4] | |
| 0.224±0.053[4] | |
| 16.4[2] | |
(89959) 2002 NT7 (provisional designation 2002 NT7) is a near-Earth object with a diameter of 1.4 kilometers and potentially hazardous asteroid of the Apollo group.[2][3] It has a well determined orbit with an observation arc of 64 years including precovery images by Palomar Observatory dating back to 1954.[3]
2002 NT7 became the first object observed by NASA's NEO program to be assigned a positive rating on both the Torino Scale and the Palermo Technical Impact Hazard Scale[5] for a small chance of an impact on 1 February 2019, although it has now been known for years that it would pass Earth at roughly 0.4078 AU (61,010,000 km; 37,910,000 mi) on 13 January 2019 with an uncertainty region of around ±108 km.[6]
MPEC2002-N38 was invoked but never defined (see the help page).jpldata was invoked but never defined (see the help page).MPC-object was invoked but never defined (see the help page).Mainzer-2011 was invoked but never defined (see the help page).hohmanntransfer was invoked but never defined (see the help page).jpl-close was invoked but never defined (see the help page).