98 Ianthe
|
Three-dimensional model of 98 Ianthe created based on light-curve. | |
| Discovery | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 18 April 1868 |
| Designations | |
Named after | Ianthe |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 145.23 yr (53047 d) |
| Aphelion | 3.18807 AU (476.928 Gm) |
| Perihelion | 2.18872 AU (327.428 Gm) |
| 2.68839 AU (402.177 Gm) | |
| Eccentricity | 0.18586 |
| 4.41 yr (1610.0 d) | |
Average orbital speed | 18.01 km/s |
| 262.019° | |
| 0° 13m 24.949s / day | |
| Inclination | 15.5778° |
| 354.000° | |
| 158.686° | |
| Earth MOID | 1.20327 AU (180.007 Gm) |
| Jupiter MOID | 1.81554 AU (271.601 Gm) |
| Jupiter Tisserand parameter | 3.296 |
| Physical characteristics | |
| Dimensions |
104.45±1.8 km[1] 106.16 ± 3.76 km[2] |
| Mass | (8.93 ± 1.99) × 1017 kg[2] |
Mean density | 1.42 ± 0.35 g/cm3[2] |
Equatorial surface gravity | 0.0292 m/s² |
Equatorial escape velocity | 0.0552 km/s |
| 16.479 h (0.6866 d)[1][3] | |
|
0.0471±0.002[1] 0.047 [4] | |
| Temperature | ~170 K |
| C | |
| 8.84 | |
|
| |
98 Ianthe (/aɪˈænθiː/ eye-AN-thee) is a large main-belt asteroid, named for three figures in Greek mythology. It is very dark and is composed of carbonates. It was one of the numerous (for his time—the 19th century) discoveries by C. H. F. Peters, who found it on April 18, 1868, from Clinton, New York.
Photometric observations of this asteroid during 2007 at the Organ Mesa Observatory in Las Cruces, New Mexico were used to create a light curve plot. This showed a synodic rotation period of 16.479 ± 0.001 hours and a brightness variation of 0.27 ± 0.02 magnitude during each cycle.[3]
References
- 1 2 3 4 "98 Ianthe". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336
, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1. - 1 2 Pilcher, Frederick (June 2008), "Period Determination for 84 Klio, 98 Ianthe, 102 Miriam 112 Iphigenia, 131 Vala, and 650 Amalasuntha", The Minor Planet Bulletin, 35 (2), pp. 71–72, Bibcode:2008MPBu...35...71P, doi:10.1016/j.pss.2012.03.009.
- ↑ Asteroid Data Sets
External links
- 98 Ianthe at the JPL Small-Body Database
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