|Discovered by||Christian Heinrich Friedrich Peters|
|Discovery date||November 12, 1862|
|MPC designation||(77) Frigga|
|Epoch December 31, 2006 (JD 2454100.5)|
|Aphelion||452.196 Gm (3.023 AU)|
|Perihelion||346.228 Gm (2.314 AU)|
|399.212 Gm (2.669 AU)|
|1592.266 d (4.36 a)|
Average orbital speed
|Mass||(1.74 ± 0.68) × 1018 kg|
|11.05 ± 4.34 g/cm3|
Equatorial surface gravity
Equatorial escape velocity
Frigga (// FRIG-ə; minor planet designation: 77 Frigga) is a large, M-type, possibly metallic main-belt asteroid. It was discovered by C. H. F. Peters on November 12, 1862. It is named after Frigg, the Norse goddess.
Frigga has been studied by radar. The spectra of this asteroid displays a feature at a wavelength of 3 μm, indicating the presence of hydrated minerals on the surface. The near infrared spectrum is reddish and shows no spectral absorption features. Potential analogs of this spectrum include enstatite chondrites and nickel-iron meteorites.
Since 1999 there have been four stellar occultations by the asteroid. The first three were single chord observations, and the fourth was a 3-chord observation, and a miss. The best fit ellipse measures 60.0x74.0 kilometres at PA -14degrees.
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