( 30825) 1990 TG1

(1990 TG1 = 2000 YP29 )

Discovery Circumstances:

Spacewatch - Steward Observatory, Kitt Peak-Spacewatch

14 Oct 1990

(1)

Orbital Type:

AP

(*)( 2)

Taxonomic Type:

Sq

( 3)

Albedo:

-

-

Diameter:(km)

3.5 - 7.7 km

($)

H:(mag)

14.920

( 4)

G:

0.24

( 5)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.62428

( 6)( 7)

Quality:

3 !

( 6)( 7)

Lightcurve Amplitude:(mag)

0.11

( 6)( 7)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

Y

( 8)

Spectral Observations:

Y

( 9)(10)(11)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

$ - diameter range derived from H and assumed albedo for C and S type - 0.04 and 0.20 respectively

! - 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) I.A.U.Circ. 5130

(002) Timoshkova, E.I. (2008) SSR 42, 28-34. (The Orbital Evolution of NEA 30825 1990 TG1)

(003) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)

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

(006) Higgins, D.J. et al. (2006) MPB 33, 8-10. (ASTERIOD LIGHTCURVE ANALYSIS AT HUNTERS HILL OBSERVATORY AND COLLABORATING STATIONS) (..,6456,..)

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

(008) JPL's NEO Radar Detection Program Webpage

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

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

(011) deLeon, J. et al. (2010) Astron. Astrophys 517, A23. (Observations, compositional, and physical characterization of near-Earth and Mars-crosser asteroids from a spectroscopic survey)


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