Astronomy:241 Germania

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241 Germania
Orbit diagram of Germania
Discovery
Discovered byRobert Luther[1]
Discovery date12 September 1884
Designations
(241) Germania
Pronunciation/dʒərˈmeɪniə/[3]
Named afterGermany[1]
A884 RA
1953 US
1953 VK1[1][2]
Minor planet categoryMain belt[2]
AdjectivesGermanian
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc141.38 yr (51640 d)[1]
|{{{apsis}}}|helion}}3.36950 astronomical unit|AU (504.070 Gm)
|{{{apsis}}}|helion}}2.72240 AU (407.265 Gm)
3.04595 AU (455.668 Gm)
Eccentricity0.106224
Orbital period5.316 yr (1941.7 d)
Average Orbital speed17.04 km/s
Mean anomaly277.959°
Mean motion0° 11m 6.598s / day
Inclination5.51789°
Longitude of ascending node270.134°
78.9146°
Physical characteristics
Dimensions168.90±3.1 km[1]
181.55±6.81 km[4]
Mass(7.386 ± 2.511/2.119)×1018 kg[4]
Mean density2.357 ± 0.801/0.676 g/cm3[4]
Rotation period15.51 h (0.646 d)[1]
Geometric albedo0.0575±0.002[1]
CP/B[1]
B-V = 0.689±0.015[1]
U-B = 0.289±0.034[1]
Absolute magnitude (H)7.73[1]


241 Germania is a very large main-belt asteroid.[1] It was discovered by Robert Luther on 12 September 1884 in Düsseldorf.[1] Germania is named after Germany.[1]

The object measures approximately 169 to 182 km in diameter and rotates on its axis once every 16 hours.[1][4] It is classified as a B-type asteroid and is probably composed of dark, primitive carbonaceous material.[4]

Discovery

Germania was discovered by Robert Luther on 12 September 1884 in Düsseldorf.[1]

Naming

The object is named after Germany, Germania is the Latin name for Germany.[1]

Observations

The observation arc of Germania began on 24 November 1884 and was last observed on 14 April 2026.[1] Giving it a long observation arc of 141 years.[1] In these 141 years, Germania has been observed 6571 times.[1]

Orbit

The orbit diagram of Germania

Germania is a main belt asteroid[2] that orbits the Sun at a distance of 2.722–3.695 astronomical units (AU) with a semi-major axis or average orbital distance of 3.046 AU once every 5.32 years[1] (for reference, Ceres's orbit is at 2.77 AU).[5]

Germania's orbit has an eccentricity of 0.1062 and an inclination of 5.518° with respect to the ecliptic.[1]

Physical characteristics

Size, mass, density and rotation

Germania has a diameter of approximately 169 to 182 km,[1] with a geometric albedo of 0.0575±0.002.[1] Germania has a mass of 7.4×1018 kg and a density of 2.4 g/cm3.[4] Germania rotates on its axis once every 15.51 hours.[1]

Composition and spectrum

Germania is classified as a B-type asteroid and is likely composed of dark, primitive carbonaceous material.[1][4][2] The B-V color index of Germania is measured at 0.689±0.015,[1] which suggests a neutral and grey color for the object.[1]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 "JPL Small-Body Database Browser: 241 Germania". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=241. 
  2. ↑ 2.0 2.1 2.2 2.3 "(241) Germania = 1884 RA = 1953 US = 1953 VK1". Minor Planet Center. https://minorplanetcenter.net/db_search/show_object?object_id=241. 
  3. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society 492 (1): 589–602. doi:10.1093/mnras/stz3407. https://academic.oup.com/mnras/article/492/1/589/5658701. 
  5. ↑ "AstDyS-2 Ceres Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1. 



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