(136923) 1998 JH2

(1998 JH2 = 1986 VH9 )

Discovery Circumstances:

Spacewatch - Steward Observatory, Kitt Peak-Spacewatch

1 May 1998

(1)

Orbital Type:

AM

(*)

Taxonomic Type:

S;Q,Sq

( 2)( 3)

Albedo:

-

-

Diameter:(km)

1.7 - 3.9 km

($)

H:(mag)

16.20

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

V-I:(mag)

-

-

B-R:(mag)

-

-

Rotation Period:(hrs)

15.7

( 4)

Quality:

2 !

( 4)

Lightcurve Amplitude:(mag)

1.22

( 4)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

Y

( 5)

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

# - 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.

References

(001) M.P.E.C. 1998-J09

(002) Kuroda, D. et al. (2014) PASJ 66, 51. (Visible-wavelength spectroscopy of subkilometer-sized near-Earth asteroids with a low delta-v) (89136,136923,141018,163000,214869,253062,311925,363305,2009SC15,2009SQ104,2011BT15)

(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) Vaduvescu, O.; Aznar Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.

(005) Kuroda, D. et al. (2014) PASJ 66, 51. (Visible-wavelength spectroscopy of subkilometer-sized near-Earth asteroids with a low delta-v) (89136,136923,141018,163000,214869,253062,311925,363305,2009SC15,2 009SQ104,2011BT15)

NEODyS Page of (136923) 1998 JH2