545 Messalina

545 MessalinaDiscovery

Discovered by| Paul Götz
Discovery site| Heidelberg
Discovery date| 3 October 1904
Designations

MPC designation

| (545) Messalina
Pronunciation| /mɛsəˈliːnə/[1] or /mɛsəˈlaɪnə/[2]

Alternative designations

| 1904 OY
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 111.54 yr (40741 d)
|{{{apsis}}}|helion}}| 3.7428 astronomical unit|AU (559.91 Gm)
|{{{apsis}}}|helion}}| 2.6600 AU (397.93 Gm)

Semi-major axis

| 3.2014 AU (478.92 Gm)
Eccentricity| 0.16912
Orbital period| 5.73 yr (2092.2 d)
Mean anomaly| 305.368°
Mean motion| 0° 10m 19.416s / day
Inclination| 11.204°
Longitude of ascending node| 333.638°

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

| 330.686°
Physical characteristics
Mean radius| 55.645±2.15 km
Rotation period| 7.2 h (0.30 d)
Geometric albedo| 0.0415±0.003
Absolute magnitude (H)| 8.84

Messalina (minor planet designation: 545 Messalina) is a minor planet orbiting the Sun. It was discovered on 3 October 1904 by Paul Götz (provisional name 1904 OY), at Heidelberg. It is named after Valeria Messalina, the third wife of Roman Emperor Claudius.[4][5][6]

## References

1. ↑ Messalina (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Messalina (Subscription or UK public library membership required.)
2. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
3. ↑ "545 Messalina (1904 OY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=545;cad=1.
4. ↑ Lutz D. Schmadel (2013). Dictionary of Minor Planet Names (Third ed.). Springer Science & Business Media. p. 89. ISBN 978-3-662-06615-7. https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA89.
5. ↑ Popular Astronomy. Goodsell Observatory of Carleton College. 1906. p. 432. https://books.google.com/books?id=hAhLAAAAYAAJ&pg=PA432.
6. ↑ The Athenaeum. British Periodicals Limited. 1906. p. 705. https://books.google.com/books?id=CM5AAQAAMAAJ&pg=PA705.

## External links

* 545 Messalina at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 545 Messalina at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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