3757 Anagolay

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3757 Anagolay
Discovery [1]
Discovered by E. F. Helin
Discovery site Palomar Obs.
Discovery date 14 December 1982
MPC designation 3757 Anagolay
Named after
(Philippine mythology)[2]
1982 XB
Amor · NEO · PHA[1][2]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 31.62 yr (11,551 days)
Aphelion 2.6521 AU
Perihelion 1.0174 AU
1.8347 AU
Eccentricity 0.4455
2.49 yr (908 days)
0° 23m 47.76s / day
Inclination 3.8679°
Earth MOID 0.0379 AU
Physical characteristics
Dimensions 0.39 km[3][4]
0.5 km[1]
9.0046±0.0013 h[5]
9.012 h[6][7]
0.26 (derived)[3]
B–V = 0.859±0.012[1]
U–B = 0.522±0.009[1]
Tholen = S[1]
18.85[4] · 18.95[1] · 19.12±0.06[3][5][8]

3757 Anagolay, provisional designation 1982 XB, is an eccentric, stony asteroid, classified as a near-Earth object and potentially hazardous asteroid. It belongs to the group of Amor asteroids and measures about half a kilometer in diameter. It was discovered by American astronomer Eleanor Helin at the U.S. Palomar Observatory, California, on 14 December 1982.[2]

The silicaceous S-type asteroid orbits the Sun at a distance of 1.0–2.7 AU once every 2 years and 6 months (908 days). Its orbit has an eccentricity of 0.45 and an inclination of 4° with respect to the ecliptic.[1] The asteroid is a potentially hazardous asteroid because its Earth minimum orbit intersection distance (MOID) is less than 0.05 AU and its diameter is greater than 150 meters. Its Earth-MOID is 0.0360 AU (5,390,000 km) which is 14.01 lunar distances. Its orbit is well-determined for the next several hundred years.[1] The asteroid's observation arc begins in 1986, as no precoveries and no identifications prior to its discovery were made.[2]

Based on two rotational light-curves obtained in the 1980s, the asteroid has a rotation period of 9.012 hours and a brightness variation of 0.20 and 0.21 in magnitude, respectively (U=n.a.).[6][7] A third light-curve, also from the 1980s, gave an alternative period of 9.0046±0.0013 hours with an amplitude of 0.14 (U=2-).[5] The body's albedo lies between 0.18 and 0.34,[1][4] with the Collaborative Asteroid Lightcurve Link (CALL) deriving an intermediate albedo of 0.26. CALL also assumes a diameter of 390 meters.[3]

The body was named after Anagolay, the goddess of lost things worshipped by pre-Hispanic Tagalogs. In Philippine mythology, Anagolay is the daughter of the hermaphroditic agricultural deity Lakampati, who in some sources is the goddess Ikapati; the latter scenario has Anagolay's father named as Mapulon, god of the seasons.[9] The name, suggested by Filipino student Mohammad Abqary Alon, bested 85 other entries in a contest held by the Space Generation Advisory Council's "Name-An-Asteroid" campaign.[2][10] Naming citation was published on 9 September 2014 (M.P.C. 89832).[11]


  1. ^ a b c d e f g h i j k l "JPL Small-Body Database Browser: 3757 Anagolay (1982 XB)" (2014-07-30 last obs.). Jet Propulsion Laboratory. Retrieved 5 December 2016. 
  2. ^ a b c d e "3757 Anagolay (1982 XB)". Minor Planet Center. Retrieved 1 February 2016. 
  3. ^ a b c d "LCDB Data for (3757) Anagolay". Asteroid Lightcurve Database (LCDB). Retrieved 30 May 2016. 
  4. ^ a b c d Harris, Alan W. (February 1998). "A Thermal Model for Near-Earth Asteroids". Icarus. 131 (2): 291–301. Bibcode:1998Icar..131..291H. doi:10.1006/icar.1997.5865. Retrieved 30 May 2016. 
  5. ^ a b c Harris, A. W.; Young, J. W.; Bowell, E.; Tholen, D. J. (November 1999). "Asteroid Lightcurve Observations from 1981 to 1983". Icarus. 142 (1). Bibcode:1999Icar..142..173H. doi:10.1006/icar.1999.6181. Retrieved 30 May 2016. 
  6. ^ a b Harris, A. W.; Young, J. W. (June 1985). "Photometric Results for Earth Approaching Asteroids.". Bulletin of the American Astronomical Society. 17: 726. Bibcode:1985BAAS...17R.726H. Retrieved 30 May 2016. 
  7. ^ a b Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 30 May 2016. 
  8. ^ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 30 May 2016. 
  9. ^ University of the Philippines. Institute of Asian Studies, Philippine Center for Advanced Studies, University of the Philippines. Asian Center (1968). "Volumes 6-7". Asian Studies. Philippine Center for Advanced Studies, University of the Philippines System. p. 171. Retrieved 26 August 2015. 
  10. ^ Montenegro, Bea (9 October 2014). "New asteroid named after Philippine goddess of lost things". GMA News Online. Retrieved 26 August 2015. 
  11. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 May 2016. 

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