240 Vanadis

Short description: Main-belt asteroid

240 Vanadis

Orbital diagram

Discovery
Discovered by| A. Borrelly
Discovery date| 27 August 1884
Designations

MPC designation

| (240) Vanadis
Pronunciation| /ˈvɑːnə.dɪs/
Named after| Freyja

Alternative designations

| A884 QB
Minor planet category| Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 131.61 yr (48072 d)
|{{{apsis}}}|helion}}| 3.2134 astronomical unit|AU (480.72 Gm)
|{{{apsis}}}|helion}}| 2.1178 AU (316.82 Gm)

Semi-major axis

| 2.6656 AU (398.77 Gm)
Eccentricity| 0.20551
Orbital period| 4.35 yr (1589.6 d)
Average Orbital speed| 18.25 km/s
Mean anomaly| 60.5202°
Mean motion| 0° 13m 35.292s / day
Inclination| 2.1043°
Longitude of ascending node| 115.191°

|{{{apsis}}}|helion}}

| 300.174°
Physical characteristics
Dimensions| 103.90±2.5 km[1]
94.03 ± 5.37 km[2]
Mass| (1.10 ± 0.92) × 1018 kg[2]
Mean density| 2.53 ± 2.15 g/cm3[2]
Rotation period| 10.64 h (0.443 d)
Geometric albedo| 0.0411±0.002

Spectral type

| C
Absolute magnitude (H)| 9.00

Vanadis (minor planet designation: 240 Vanadis) is a fairly large main-belt asteroid. It is very dark and is classified as a C-type asteroid, probably composed of primitive carbonaceous material.

It was discovered by A. Borrelly on August 27, 1884, in Marseilles and was named after Freyja (Vanadis), the Norse fertility goddess.

## References

1. ↑ 1.0 1.1 "240 Vanadis". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=240;cad=1.
2. ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.

## External links

* The Asteroid Orbital Elements Database
* Minor Planet Discovery Circumstances
* Asteroid Lightcurve Data File
* 240 Vanadis at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 240 Vanadis at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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