469 Argentina

469 ArgentinaDiscovery[1]

Discovered by| Luigi Carnera
Discovery site| Heidelberg Observatory
Discovery date| 20 February 1901
Designations

MPC designation

| (469) Argentina
Pronunciation| /ɑːrdʒənˈtaɪnə/
Named after| Argentina

Alternative designations

| 1901 GE
Minor planet category| main belt
Adjectives| Argentinian /ɑːrdʒənˈtɪniən/
Orbital characteristics[2][3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 109.08 yr (39840 d)
||helion}}| 3.68734 astronomical unit|AU (551.618 Gm)
||helion}}| 2.67484 AU (400.150 Gm)

Semi-major axis

| 3.18109 AU (475.884 Gm)
Eccentricity| 0.159144
Orbital period| 5.67 yr (2072.3 d)
Mean anomaly| 153.115°
Mean motion| 0° 10m 25.378s / day
Inclination| 11.5955°
Longitude of ascending node| 333.476°

||helion}}

| 209.588°
Physical characteristics
Dimensions|

* 125.57 ± 5.6 kilometres (78.03 ± 3.48 mi)
Mean diameter[4]
* 126.00 ± 4.91 kilometres (78.29 ± 3.05 mi)[5]

Mean radius| 62.785±2.8 km
Mass| (4.53±1.76)×1018 kg[5]
Mean density| 4.32±1.75 g/cm3[5]
Rotation period|

* 12.3 hours[6]
* 17.573 h (0.7322 d)[3]

Geometric albedo| 0.0399±0.004[3][4]

Spectral type

| P[7]
Absolute magnitude (H)| 8.62[8]

469 Argentina is an asteroid that was discovered by Luigi Carnera on 20 February 1901. Its provisional name was 1901 GE.[1] 469 Argentina has an estimated rotation period of 12.3 hours.[6]

## References

1. ↑ 1.0 1.1 "Discovery Circumstances: Numbered Minor Planets (1)–(5000)". IAU: Minor Planet Center. http://www.cfa.harvard.edu/iau/lists/NumberedMPs000001.html.
2. ↑ "(469) Argentina". AstDyS. Italy: University of Pisa. https://newton.spacedys.com/astdys/index.php?pc=1.1.0&n=469.
3. ↑ 3.0 3.1 3.2 "469 Argentina (1901 GE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=469;cad=1.
4. ↑ 4.0 4.1 Tedesco (2004). "Supplemental IRAS Minor Planet Survey (SIMPS)". IRAS-A-FPA-3-RDR-IMPS-V6.0. Planetary Data System. http://www.psi.edu/pds/resource/imps.html.
5. ↑ 5.0 5.1 5.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
6. ↑ 6.0 6.1 Székely et al. (2005). "CCD photometry of 23 minor planets". Planetary and Space Science 53 (9): 925–936. doi:10.1016/j.pss.2005.04.006. Bibcode: 2005P&SS...53..925S. web preprint
7. ↑ Fieber-Beyer (2006-10-24). "Near-ir spectroscopic analysis of mainbelt X-asteroid 469 Argentina" (abstract). 2006 Geological Society of America annual meeting and exposition. 38. Geological Society of America. pp. 405. http://gsa.confex.com/gsa/2006AM/finalprogram/abstract_114163.htm. Retrieved 2008-12-11.
8. ↑ Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0.. Planetary Data System. http://www.psi.edu/pds/resource/astermag.html.

## External links

* Lightcurve plot of 469 Argentina[Usurped!], Palmer Divide Observatory, B. D. Warner (2006)
* Asteroid Lightcurve Database (LCDB), query form (info )
* Dictionary of Minor Planet Names, Google books
* Asteroids and comets rotation curves, CdR - Observatoire de Genève, Raoul Behrend
* Discovery Circumstances: Numbered Minor Planets (1)–(5000) - Minor Planet Center
* 469 Argentina at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 469 Argentina at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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