.png) A three-dimensional model of 184 Dejopeja based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa, 1878 |
| Discovery date | 28 February 1878 |
| Designations | |
| MPC designation | (184) Dejopeja |
| Pronunciation | /diːoʊˈpiːə/ |
| Named after | Deiopea |
| Alternative designations | A878 DA; 1903 QB; 1959 LL |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.52 yr (45117 d) |
| Aphelion | 3.4005 AU (508.71 Gm) |
| Perihelion | 2.9741 AU (444.92 Gm) |
| Semi-major axis | 3.1873 AU (476.81 Gm) |
| Eccentricity | 0.066883 |
| Orbital period (sidereal) | 5.69 yr (2078.4 d) |
| Mean anomaly | 119.18° |
| Mean motion | 0° 10 23.556 / day |
| Inclination | 1.1437° |
| Longitude of ascending node | 331.61° |
| Argument of perihelion | 209.72° |
| Earth MOID | 1.97613 AU (295.625 Gm) |
| Jupiter MOID | 1.56558 AU (234.207 Gm) |
| TJupiter | 3.194 |
| Physical characteristics | |
| Mean radius | 33.235±1 km |
| Synodic rotation period | 6.455 h (0.2690 d) |
| Geometric albedo | 0.1897±0.012 |
| Spectral type | M |
| Absolute magnitude (H) | 8.31 |
184 Dejopeja is a large M-type Main belt asteroid. It was discovered by Johann Palisa on February 28, 1878, and was named after Deiopea, a Roman nymph.
This is an X-type asteroid with a diameter of 66 km and a geometric albedo of 0.190. Based upon Photometric observations taken during 2000, it has a synodic rotation period of 6.441 ± 0.001 h. The light curve is tri-modal, most likely due to an angular shape, with a peak-to-peak amplitude of 0.19 ± 0.01 in magnitude.
References
- "184 Dejopeja". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
- Schmadel, L. (2003:29). Dictionary of minor planet names. Germany: Springer.
- Marciniak, A.; et al. (October 2007), "Photometry and models of selected main belt asteroids. IV. 184 Dejopeja, 276 Adelheid, 556 Phyllis", Astronomy and Astrophysics, 473 (2): 633–639, Bibcode:2007A&A...473..633M, doi:10.1051/0004-6361:20077694.
External links
- 184 Dejopeja at AstDyS-2, Asteroids—Dynamic Site
- 184 Dejopeja at the JPL Small-Body Database
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