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26 Proserpina

Main-belt asteroid

Main-belt asteroid

FieldValue
imageA713.M1189.shape.png
captionThree-dimensional model of 26 Proserpina created based on light-curve inversions.
minorplanetyes
background#D6D6D6
name26 Proserpina
symbol[[Image:Proserpina symbol (bold).svg24px]] (historical)
discovererR. Luther
discovered5 May 1853
pronounced
adjectiveProserpinian
mpc_name(26) Proserpina
alt_names1935 KK;
named_afterProserpina
mp_categoryMain belt
orbit_ref
epoch21 November 2025 (JD 2461000.5)
semimajor2.655 AU
perihelion2.420 AU
aphelion2.890 AU
eccentricity0.089
period4.327 yr (1580.27 d)
inclination3.555°
asc_node45.685°
arg_peri196.057°
mean_anomaly289.591°
jupiter_moid2.106 AU
tisserand3.380
dimensions94.8 ± 1.7 km (IRAS)
89.63 ± 3.55 km
mass(7.48 ± 8.95) × 1017 kg
density1.98 ± 2.38 g/cm3
rotation13.11 h
spectral_typeS
abs_magnitude7.5
albedo0.1966

89.63 ± 3.55 km

26 Proserpina is a main-belt asteroid discovered by German astronomer R. Luther on 5 May 1853. It is named after the Roman goddess Proserpina, the daughter of Ceres and the Queen of the Underworld. Another main-belt asteroid, 399 Persephone, discovered in 1895, is named after her Greek counterpart. Its historical symbol was a star inside a pomegranate; it is encoded in Unicode as ([[File:Proserpina symbol (fixed width).svg|12px]]).{{cite web | access-date = September 9, 2025 | url-status = live

This object is orbiting the Sun with a period of 4.33 years. It has a cross-section size of around 90 km and a stony (S-type) composition. Photometric observations of this asteroid have produced discrepant estimates of the rotation period. A period of 12.13 hours was reported in 1979, followed by 10.6 hours in 1981 and 6.67 hours in 2001. Observations made in 2007 at the Oakley Observatory in Terre Haute, Indiana produced a light curve with a period of 13.06 ± 0.03 hours and a brightness variation of 0.21 ± 0.01 in magnitude. This was refined by a 2008 study, giving a period of 13.110 ± 0.001 hours.

References

References

  1. Noah Webster (1884) ''A Practical Dictionary of the English Language''
  2. E.g. Andrew & Reid (2003) ''Two Hundred Years of Pushkin''
  3. "Asteroid lightcurve derived data".
  4. (18 September 2023). "Unicode request for historical asteroid symbols". Unicode.
Info: Wikipedia Source

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