( 40267) 1999 GJ4

(1999 GJ4 )

Discovery Circumstances:

LINEAR - Lincoln Laboratory ETS, New Mexico

10 Apr 1999

(1)

Orbital Type:

AP

(*)

Taxonomic Type:

Sq

( 2)

Albedo:

0.30

( 3)( 4)( 5)( 6)( 7)( 8)

Diameter:(km)

1.7 km

( 9)(10)(11)(12)(13)(14)

H:(mag)

16.080

(15)(16)(17)

G:

0.50

(18)(19)(20)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

4.9569

(21)(22)(23)(24)

Quality:

3 !

(21)(22)(23)(24)

Lightcurve Amplitude:(mag)

1.11

(21)(22)(23)(24)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

Y

(25)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

! - 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.

References

( 1) M.P.E.C. 1999-G26

(002) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.)

(003) Mainzer, A. et al. (2014) Astrophys. J. 792, 30. (Initial Performance of the NEOWISE Reactivation Mission) (prel.diameters & albedos for 61 NEOs)

(004) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(005) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)

(006) 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)

(007) Campins, H. et al. (2009) Earth Moon and Planets 105, 159-165. (Low perihelion near-Earth asteroids)

(008) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)

(009) Mainzer, A. et al. (2014) Astrophys. J. 792, 30. (Initial Performance of the NEOWISE Reactivation Mission) (prel.diameters & albedos for 61 NEOs)

(010) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(011) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)

(012) Campins, H. et al. (2009) Earth Moon and Planets 105, 159-165. (Low perihelion near-Earth asteroids)

(013) 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)

(014) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)

(015) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(016) Galad, A. et al. (2005) Earth, Moon and Planets 97, 147-163. (Joint lightcurve observations of 10 near-Earth asteroids from Modra and Ondrejov) (3553,22753,31669,40267,66146,88188,103067,1001CB21,2004LJ1,2004XO14,)

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

(018) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(019) Galad, A. et al. (2005) Earth, Moon and Planets 97, 147-163. (Joint lightcurve observations of 10 near-Earth asteroids from Modra and Ondrejov) (3553,22753,31669,40267,66146,88188,103067,1001CB21,2004LJ1,2004XO14,)

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

(021) Galad, A. et al. (2005) Earth, Moon and Planets 97, 147-163. (Joint lightcurve observations of 10 near-Earth asteroids from Modra and Ondrejov) (3553,22753,31669,40267,66146,88188,103067,1001CB21,2004 LJ1,2004XO14,)

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

(023) Polishook, D. (2012) MPB 39, 187-192. (LIGHTCURVES AND SPIN PERIODS OF NEAR-EARTH ASTEROIDS, THE WISE OBSERVATORY, 2005 - 2010) (1862,3361,5143,10115,40267,66251,68216,86829,105140,138893,141432,141495,152931,185851,2009UN3)

(024) Warner, B.D. et al. (2014) MPB 41, 157-168. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 JANUARY-MARCH) (1943,4055,4954,25916,35107,40267,53435,68031,85990,86039,138127,143409,243566,275677,277570,294739,357622,377097,1995CR,2006DP14,2009CT,2009QF31,2011BT15,2012AU10,2013XV8,2013YZ13,2013PD21,2013XF22,2013YZ37,2013WT44,2014CR,2014EM,2014BR8,2014CG13,2014CU13,2014EY24,2014AY28,2014EL45,2014BR57,2014DX110)

(025) Binzel, R.P. et al. (2001) Icarus 151,139-149. (Spectral Properties of Near-Earth Objects: Palomar and IRTF Results for 48 Objects Including Spacecraft Targets (9969) Braille and (10302) 1989 ML)


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