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Lightcurve-based 3D-model of Pepita | |
Discovery [1] | |
---|---|
Discovered by | J. Comas Solà |
Discovery site | Fabra Obs. |
Discovery date | 5 November 1928 |
Designations | |
(1102) Pepita | |
Named after |
Josep Comas i Solà
[2] (discoverer himself) |
1928 VA · 1960 WQ A899 KB | |
main-belt · (
outer)
[3] background [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 86.24 yr (31,499 days) |
Aphelion | 3.4119 AU |
Perihelion | 2.7311 AU |
3.0715 AU | |
Eccentricity | 0.1108 |
5.38 yr (1,966 days) | |
267.80 ° | |
0° 10m 59.16s / day | |
Inclination | 15.828° |
216.59° | |
116.55° | |
Physical characteristics | |
30.88±1.59
km
[5] 36.632±0.378 km [6] 39.27±2.1 km [7] 41.02±0.74 km [8] 41.733±0.308 km [9] | |
5.1±0.1
h
[10] 5.1040±0.0003 h [10] 5.10532±0.00005 h [11] 5.1054±0.0002 h [12] | |
0.1842±0.0220
[9] 0.188±0.007 [8] 0.1991±0.023 [7] 0.229±0.054 [6] 0.322±0.058 [5] | |
Tholen =
C
[1] SMASS = S [1] [3] B–V = 0.724 [1] U–B = 0.424 [1] | |
8.68±0.65
[13] 9.40 [1] [3] [5] [7] [8] [9] | |
1102 Pepita, provisional designation 1928 VA, is a stony background asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered on 5 November 1928, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain. [14] It was named after the discoverer by the feminine form of his nickname. [2] The asteroid has a rotation period of 5.1 hours. [3]
Pepita is a non- family asteroid from the main belt's background population. [4] It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.4 AU once every 5 years and 5 months (1,966 days; semi-major axis of 3.07 AU). Its orbit has an eccentricity of 0.11 and an inclination of 16 ° with respect to the ecliptic. [1]
In May 1899, the asteroid was first observed as A899 KB at Harvard's Boyden Station in Arequipa, Peru ( 800). The body's observation arc begins with its official discovery observation at Barcelona. [14]
In the SMASS classification, Pepita is a stony S-type asteroid, which agrees with the body's measured geometric albedo (see below). [1] [3] Conversely, it is also classified as a carbonaceous C-type asteroid by Tholen. [1]
Three rotational lightcurves of Pepita were obtained from photometric observations by astronomers Hilari Pallares and Enric Forné (2006, U=2), Pierre Antonini and René Roy (2007, U=3), as well as by Robert Stephens (2007, U=3). [10] [12] The consolidated lightcurve gave a well-defined rotation period of 5.1054 hours with a brightness amplitude between 0.31 and 0.36 magnitude. [1] [12]
In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue and other sources gave a concurring sidereal period 5.10532 hours, as well as two spin axes of (25.0°, −34.0°) and (231.0°, −30.0°) in ecliptic coordinates (λ, β). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Pepita measures between 30.88 and 41.733 kilometers in diameter and its surface has an albedo between 0.1842 and 0.322. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1991 and a diameter of 39.27 kilometers based on an absolute magnitude of 9.40. [3] [7]
This minor planet was named after the discoverer, Josep Comas i Solà (1868–1937), by the feminine form of his nickname, "Pepito". He was the first director of the discovering Fabra Observatory and founded the Astronomical Society of Spain and America ( Spanish: Sociedad Astronomica de España y América, SADEYA). [2]
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 104). [2] The asteroid 1655 Comas Solà is also named after him, as is the Martian crater Comas Sola. [15]
![]()
Lightcurve-based 3D-model of Pepita | |
Discovery [1] | |
---|---|
Discovered by | J. Comas Solà |
Discovery site | Fabra Obs. |
Discovery date | 5 November 1928 |
Designations | |
(1102) Pepita | |
Named after |
Josep Comas i Solà
[2] (discoverer himself) |
1928 VA · 1960 WQ A899 KB | |
main-belt · (
outer)
[3] background [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 86.24 yr (31,499 days) |
Aphelion | 3.4119 AU |
Perihelion | 2.7311 AU |
3.0715 AU | |
Eccentricity | 0.1108 |
5.38 yr (1,966 days) | |
267.80 ° | |
0° 10m 59.16s / day | |
Inclination | 15.828° |
216.59° | |
116.55° | |
Physical characteristics | |
30.88±1.59
km
[5] 36.632±0.378 km [6] 39.27±2.1 km [7] 41.02±0.74 km [8] 41.733±0.308 km [9] | |
5.1±0.1
h
[10] 5.1040±0.0003 h [10] 5.10532±0.00005 h [11] 5.1054±0.0002 h [12] | |
0.1842±0.0220
[9] 0.188±0.007 [8] 0.1991±0.023 [7] 0.229±0.054 [6] 0.322±0.058 [5] | |
Tholen =
C
[1] SMASS = S [1] [3] B–V = 0.724 [1] U–B = 0.424 [1] | |
8.68±0.65
[13] 9.40 [1] [3] [5] [7] [8] [9] | |
1102 Pepita, provisional designation 1928 VA, is a stony background asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered on 5 November 1928, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain. [14] It was named after the discoverer by the feminine form of his nickname. [2] The asteroid has a rotation period of 5.1 hours. [3]
Pepita is a non- family asteroid from the main belt's background population. [4] It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.4 AU once every 5 years and 5 months (1,966 days; semi-major axis of 3.07 AU). Its orbit has an eccentricity of 0.11 and an inclination of 16 ° with respect to the ecliptic. [1]
In May 1899, the asteroid was first observed as A899 KB at Harvard's Boyden Station in Arequipa, Peru ( 800). The body's observation arc begins with its official discovery observation at Barcelona. [14]
In the SMASS classification, Pepita is a stony S-type asteroid, which agrees with the body's measured geometric albedo (see below). [1] [3] Conversely, it is also classified as a carbonaceous C-type asteroid by Tholen. [1]
Three rotational lightcurves of Pepita were obtained from photometric observations by astronomers Hilari Pallares and Enric Forné (2006, U=2), Pierre Antonini and René Roy (2007, U=3), as well as by Robert Stephens (2007, U=3). [10] [12] The consolidated lightcurve gave a well-defined rotation period of 5.1054 hours with a brightness amplitude between 0.31 and 0.36 magnitude. [1] [12]
In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue and other sources gave a concurring sidereal period 5.10532 hours, as well as two spin axes of (25.0°, −34.0°) and (231.0°, −30.0°) in ecliptic coordinates (λ, β). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Pepita measures between 30.88 and 41.733 kilometers in diameter and its surface has an albedo between 0.1842 and 0.322. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1991 and a diameter of 39.27 kilometers based on an absolute magnitude of 9.40. [3] [7]
This minor planet was named after the discoverer, Josep Comas i Solà (1868–1937), by the feminine form of his nickname, "Pepito". He was the first director of the discovering Fabra Observatory and founded the Astronomical Society of Spain and America ( Spanish: Sociedad Astronomica de España y América, SADEYA). [2]
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 104). [2] The asteroid 1655 Comas Solà is also named after him, as is the Martian crater Comas Sola. [15]