(1026) Ingrid
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 13 August 1923 |
| Designations | |
| MPC designation | (1026) Ingrid |
|
Named after
|
Ingrid, niece of astronomer Albrecht Kahrstedt |
| 1923 NY · 1957 UC 1963 GD · 1981 WL8 1986 CG2 · 1986 ES2 |
|
|
main-belt · (inner) Flora |
|
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 93.89 yr (34,294 days) |
| Aphelion | 2.6636 AU |
| Perihelion | 1.8458 AU |
| 2.2547 AU | |
| Eccentricity | 0.1814 |
| 3.39 yr (1,237 days) | |
| 292.55° | |
| 0° 17m 27.96s / day | |
| Inclination | 5.3994° |
| 104.59° | |
| 212.34° | |
| Physical characteristics | |
| Dimensions |
5.73±1.01 km 6.96±0.68 km 7.353±0.082 km 7.670±0.069 km 8.19 km (calculated) |
| 5 h | |
|
0.1441±0.0250 0.156±0.024 0.175±0.035 0.24 (assumed) 0.43±0.22 |
|
| S | |
| 12.6 · 12.70 · 12.8 · 13.30 | |
1026 Ingrid, provisional designation 1923 NY, is a stony Florian asteroid and long-lost minor planet (1923–1986) from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by Karl Reinmuth at Heidelberg in 1923, and later named after Ingrid, niece and godchild of astronomer Albrecht Kahrstedt.
Ingrid was discovered on 13 August 1923, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was observed for only a few days during August 1923, before it became a lost minor planet for nearly 63 years until its recovery by Japanese astronomer Syuichi Nakano in 1986.
Nakano was able to show that Ingrid had been observed and provisionally designated several times during its lost period: as 1957 UC at the discovering Heidelberg Observatory in October 1957, possibly as 1963 GD at Goethe Link Observatory in April 1963, as 1981 WL8 at the Crimean Astrophysical Observatory in November 1981, and as 1986 ES2 at Palomar Observatory in March 1986.
With the recovery of Ingrid in 1986, and the almost simultaneously recovered asteroid 1179 Mally, the list of long-lost numbered asteroids was reduced to four. The last remaining lost asteroid, 69230 Hermes, was recovered in 2003.
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