1767 Lampland

1767 Lampland

Shape model of Lampland from its lightcurve
Discovery[1]
Discovered by	Indiana University (Indiana Asteroid Program)
Discovery site	Goethe Link Obs.
Discovery date	7 September 1962
Designations
MPC designation	(1767) Lampland
Named after	Carl Lampland[2] (American astronomer)
Alternative designations	1962 RJ · 1941 SP 1967 SC
Minor planet category	main-belt · (outer) Eos[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	75.52 yr (27,585 days)
Aphelion	3.3209 AU
Perihelion	2.7160 AU
Semi-major axis	3.0185 AU
Eccentricity	0.1002
Orbital period (sidereal)	5.24 yr (1,915 days)
Mean anomaly	201.21°
Mean motion	0° 11^m 16.44^s / day
Inclination	9.8418°
Longitude of ascending node	192.22°
Argument of perihelion	135.41°
Physical characteristics
Dimensions	15.448±2.805 km[4]
Geometric albedo	0.116±0.057[5]
Spectral type	Tholen = XC[1] B–V = 0.750[1] U–B = 0.340[1]
Absolute magnitude (H)	12.20[1]

1767 Lampland, provisional designation 1962 RJ, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 7 September 1962, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States.[6] The asteroid was named after American astronomer Carl Lampland.[2]

Orbit and classification

Lampland a member the Eos family (606), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.[3][7]: 23  It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,915 days). Its orbit has an eccentricity of 0.10 and an inclination of 10° with respect to the ecliptic.[1]

The asteroid was first identified as 1941 SP at Uccle Observatory in September 1941. The body's observation arc begins with a precovery at Palomar Observatory in August 1951, more than 11 years prior to its official discovery observation at Goethe Link.[6]

Physical characteristics

In the Tholen classification, its spectral type is ambiguous, closest to the X-type asteroid and with some resemblance to the C-type asteroids,[1] while the overall spectral type of the Eos family is that of a K-type.[7]: 23 

Rotation period

As of 2017, no rotational lightcurve of Lampland has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.[8]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lampland measures 15.448 kilometers in diameter and its surface has an albedo of 0.116.[4][5]

Naming

This minor planet was named after American astronomer Carl Lampland (1873–1951), a graduate of Indiana University, best known for his radiometric measurements of planetary temperatures.[2]

Lampland is also honored by a lunar and by a Martian crater. The name was proposed by Frank K. Edmondson, who initiated the Indiana Asteroid Program.[2] The official naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3144).[9]

References

1. "JPL Small-Body Database Browser: 1767 Lampland (1962 RJ)" (2017-03-30 last obs.). Jet Propulsion Laboratory. Retrieved 6 September 2017.
2. Schmadel, Lutz D. (2007). "(1767) Lampland". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 141. doi:10.1007/978-3-540-29925-7_1768. ISBN 978-3-540-00238-3.
3. "Asteroid 1767 Lampland – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
4. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 6 September 2017.
5. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 6 September 2017.
6. "1767 Lampland (1962 RJ)". Minor Planet Center. Retrieved 6 September 2017.
7. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
8. "LCDB Data for (1767) Lampland". Asteroid Lightcurve Database (LCDB). Retrieved 6 September 2017.
9. Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• 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
• 1767 Lampland at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1767 Lampland at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters