Discovery [1] | |
---|---|
Discovered by | Mount Lemmon Survey |
Discovery site | Summerhaven, Arizona, US |
Discovery date | 11 July 2005 |
Designations | |
2005 NB56 | |
Orbital characteristics [2] | |
Epoch 14 July 2005 ( JD 2453565.5) | |
Uncertainty parameter 7 | |
Observation arc | 17 [1] d |
Aphelion | 2.41707 AU (361.589 Gm) |
Perihelion | 0.86585 AU (129.529 Gm) |
1.64146 AU (245.559 Gm) | |
Eccentricity | 0.47251 |
2.10 yr (768.15 d) | |
25.175 ° | |
0° 28m 7.176s /day | |
Inclination | 6.7563° |
112.359° | |
114.15° | |
Earth MOID | 0.0163799 AU (2,450,400 km) |
Jupiter MOID | 2.5887 AU (387.26 Gm) |
Physical characteristics | |
~170 m [3] | |
22.9 [2] | |
2005 NB56, also written as 2005 NB56, is a near-Earth asteroid of the Apollo group. [2] In 2009, research physicist Edward Drobyshevski and colleagues have suggested that 2005 NB56 could be a possible source of the meteoroid that caused the Tunguska event on 30 June 1908. It has been also suspected to be a dormant comet. [4]
One study "suggests that a chunk of a comet caused the 5-10 megaton fireball, bouncing off the atmosphere and back into orbit around the sun." [4]
This object made a close approach to Earth when it was discovered in 2005 and will do so again in 2045. [5] This object has a poorly known orbit and was only observed over an observation arc of 17 days, not sufficient to predict its position in 1908 with sufficient accuracy. [2]
Discovery [1] | |
---|---|
Discovered by | Mount Lemmon Survey |
Discovery site | Summerhaven, Arizona, US |
Discovery date | 11 July 2005 |
Designations | |
2005 NB56 | |
Orbital characteristics [2] | |
Epoch 14 July 2005 ( JD 2453565.5) | |
Uncertainty parameter 7 | |
Observation arc | 17 [1] d |
Aphelion | 2.41707 AU (361.589 Gm) |
Perihelion | 0.86585 AU (129.529 Gm) |
1.64146 AU (245.559 Gm) | |
Eccentricity | 0.47251 |
2.10 yr (768.15 d) | |
25.175 ° | |
0° 28m 7.176s /day | |
Inclination | 6.7563° |
112.359° | |
114.15° | |
Earth MOID | 0.0163799 AU (2,450,400 km) |
Jupiter MOID | 2.5887 AU (387.26 Gm) |
Physical characteristics | |
~170 m [3] | |
22.9 [2] | |
2005 NB56, also written as 2005 NB56, is a near-Earth asteroid of the Apollo group. [2] In 2009, research physicist Edward Drobyshevski and colleagues have suggested that 2005 NB56 could be a possible source of the meteoroid that caused the Tunguska event on 30 June 1908. It has been also suspected to be a dormant comet. [4]
One study "suggests that a chunk of a comet caused the 5-10 megaton fireball, bouncing off the atmosphere and back into orbit around the sun." [4]
This object made a close approach to Earth when it was discovered in 2005 and will do so again in 2045. [5] This object has a poorly known orbit and was only observed over an observation arc of 17 days, not sufficient to predict its position in 1908 with sufficient accuracy. [2]