Discovery | |
---|---|
Discovered by | Pan-STARRS |
Discovery date | 13 July 2013 |
Designations | |
2013 ND15 | |
Orbital characteristics [2] [3] [4] | |
Epoch 13 January 2016 ( JD 2457400.5) | |
Uncertainty parameter 7 | |
Aphelion | 1.1660 AU (174.43 Gm) |
Perihelion | 0.28100 AU (42.037 Gm) |
0.72351 AU (108.236 Gm) | |
Eccentricity | 0.61162 |
0.62 yr (224.8 d) | |
198.82 ° | |
1.6015°/day | |
Inclination | 4.7962° |
95.841° | |
19.697° | |
Earth MOID | 0.00751978 AU (1,124,943 km) |
Jupiter MOID | 3.95146 AU (591.130 Gm) |
Physical characteristics | |
Dimensions | 40–100 m [a] [5] |
24.1 [2] | |
2013 ND15 (also written 2013 ND15) is an asteroid that is a temporary trojan of Venus, the first known Venus trojan. [6]
2013 ND15 was discovered on 13 July 2013 by N. Primak, A. Schultz, T. Goggia and K. Chambers, observing for the Pan-STARRS project. As of September 2014, it has been observed 21 times with a data-arc span of 26 days. It is an Aten asteroid and its semi-major axis (0.7235 AU) is very similar to that of Venus but it has high eccentricity (0.6115) and small orbital inclination (4.794°). With an absolute magnitude of 24.1, it has a diameter in the range 40–100 m (for an assumed albedo range of 0.04-0.20).
2013 ND15 has been identified as a Venus trojan following a tadpole orbit around Venus' Lagrangian point L4. [6] Besides being a Venus co-orbital, this asteroid is also a Mercury crosser and an Earth crosser. 2013 ND15 exhibits resonant (or near-resonant) behavior with Mercury, Venus and Earth. [6] Its short-term dynamical evolution is different from that of the other three Venus co-orbitals, 2001 CK32, Zoozve, and 2012 XE133. [6]
2013 ND15 is not included in the Minor Planet Center list of potentially hazardous asteroids ( PHAs) because its absolute magnitude is greater than 22.0, even though it comes to within 0.05 AU of Earth periodically. It approached Earth at 0.077 AU on 21 June 2016.
Discovery | |
---|---|
Discovered by | Pan-STARRS |
Discovery date | 13 July 2013 |
Designations | |
2013 ND15 | |
Orbital characteristics [2] [3] [4] | |
Epoch 13 January 2016 ( JD 2457400.5) | |
Uncertainty parameter 7 | |
Aphelion | 1.1660 AU (174.43 Gm) |
Perihelion | 0.28100 AU (42.037 Gm) |
0.72351 AU (108.236 Gm) | |
Eccentricity | 0.61162 |
0.62 yr (224.8 d) | |
198.82 ° | |
1.6015°/day | |
Inclination | 4.7962° |
95.841° | |
19.697° | |
Earth MOID | 0.00751978 AU (1,124,943 km) |
Jupiter MOID | 3.95146 AU (591.130 Gm) |
Physical characteristics | |
Dimensions | 40–100 m [a] [5] |
24.1 [2] | |
2013 ND15 (also written 2013 ND15) is an asteroid that is a temporary trojan of Venus, the first known Venus trojan. [6]
2013 ND15 was discovered on 13 July 2013 by N. Primak, A. Schultz, T. Goggia and K. Chambers, observing for the Pan-STARRS project. As of September 2014, it has been observed 21 times with a data-arc span of 26 days. It is an Aten asteroid and its semi-major axis (0.7235 AU) is very similar to that of Venus but it has high eccentricity (0.6115) and small orbital inclination (4.794°). With an absolute magnitude of 24.1, it has a diameter in the range 40–100 m (for an assumed albedo range of 0.04-0.20).
2013 ND15 has been identified as a Venus trojan following a tadpole orbit around Venus' Lagrangian point L4. [6] Besides being a Venus co-orbital, this asteroid is also a Mercury crosser and an Earth crosser. 2013 ND15 exhibits resonant (or near-resonant) behavior with Mercury, Venus and Earth. [6] Its short-term dynamical evolution is different from that of the other three Venus co-orbitals, 2001 CK32, Zoozve, and 2012 XE133. [6]
2013 ND15 is not included in the Minor Planet Center list of potentially hazardous asteroids ( PHAs) because its absolute magnitude is greater than 22.0, even though it comes to within 0.05 AU of Earth periodically. It approached Earth at 0.077 AU on 21 June 2016.