(137170) 1999 HF1

(1999 HF1 )

Discovery Circumstances:

LONEOS - Lowell Observatory-LONEOS

20 Apr 1999

(1)

Orbital Type:

AT

(*)

Taxonomic Type:

X;C/X

( 2)( 3)( 4)

Albedo:

0.10

( 5)( 6)( 7)( 8)

Diameter:(km)

3.73 km

( 9)(10)

H:(mag)

14.60

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.3191+14.03

(11)(12)(13)(14)(15)(16)(17)(18)

Quality:

3B !

(11)(12)(13)(14)(15)(16)(17)(18)

Lightcurve Amplitude:(mag)

0.17-0.23

(11)(12)(13)(14)(15)(16)(17)(18)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

Y

(19)(20)(21)(22)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

# - absolute magnitude H derived from astrometric observation via orbit determination - G value assumed to be 0.15

! - quality code according to Lagerkvist et al. (1989) in "Asteroids II" (Eds. R.P.Binzel et al.), Univ.Ariz.Press, Tucson, USA, pp. 1162-1179.

B - in rotation quality code means Binary asteroid

References

( 1) M.P.E.C. 1999-H17

(002) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

(003) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs)

(004) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)

(005) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs)

(006) Wolters, S.D. et al. (2005) Icarus 175, 92-110. (Optical and thermal infrared observations of six near-Earth asteroids in 2002) (6455, 1999 HF1, 2000 ED104, 2002 HK12, 2002 NX18, 2002 QE15)

(007) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

(008) Kumar, S. et al. (2006) LPSC 37, 1113. (ALBEDO ESTIMATES AND NEAR-INFRARED REFLECTANCE SPECTROSCOPY OF NEAR EARTH ASTEROIDS 1999 HF1 AND 2005 AB.)

(009) Wolters, S.D. et al. (2005) Icarus 175, 92-110. (Optical and thermal infrared observations of six near-Earth asteroids in 2002) (6455, 1999 HF1, 2000 ED104, 2002 HK12, 2002 NX18, 2002 QE15)

(010) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

(011) Pravec, P. et al. (2002) M.P.B. 29, 23-25. (Doubly-periodic lightcurve of 1999 HF1 - a binary NEA candidate)

(012) Pravec, P. et al. (2002) Icarus, 158, 276-280. (Two periods of 1999 HF1 - Another binary NEA candidate.)

(013) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"

(014) Pravec, P. et al. (2005) I.A.U. Circ. 8478. (1999 HF_1) (Photometry, binary system parameters)

(015) Pravec, P. et al. (2006) Icarus 181, 63-93. (Photometric survey of binary near-Earth asteroids)

(016) Elenin, L. & I.Molotov (2012) MPB 39, 101-102. (ASTEROIDS LIGHTCURVE ANALYSIS AT THE ISON-NM OBSERVATORY: 3122 FLORENCE, (25916) 2001 CP44,(47035) 1998 WS, (137170) 1999 HF1)

(017) Sonka, A.D. et al. (2014) MPB 41, 285-286. (NEW PHOTOMETRIC OBSERVATIONS OF THE BINARY NEAR-EARTH ASTEROID (137170) 1999 HF1)

(018) Warner, B.D. (2016) MPB 43, 311-319. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 APRIL-JULY)(31 NEAs)

(019) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

(020) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.)

(021) Binzel, R.P. et al. Webpage

(022) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)


NEODyS Page of (137170) 1999 HF1