(162000) 1990 OS

(1990 OS )

Discovery Circumstances:

E. F. Helin - Palomar Mountain

21 Jul 1990

(1)

Orbital Type:

AP

(*)

Taxonomic Type:

-

-

Albedo:

-

-

Diameter:(km)

397 - 888 m

($)

H:(mag)

19.40

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

~21.

( 2)( 3)

Quality:

RB

( 2)( 3)

Lightcurve Amplitude:(mag)

-

( 2)( 3)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

Y

( 4)( 5)

Spectral Observations:

-

-

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

B - in rotation quality code means Binary asteroid

R - as rotation quality code means Radar observations

References

( 1) I.A.U.Circ. 5064

(002) Ostro, S.J. et al. (2003) I.A.U. Circ. 8237. (1990 OS) (radar obs. binary asteroid)

(003) Pravec, P. et al (2016) Icarus 267,267-295. (Binary asteroid population. 3. Secondary rotations and elongations) (..,..)

(004) Ostro, S.J. et al. (1991) Astron. J. 102, 1490-1502. (Asteroid radar astrometry)

(005) Ostro, S.J. et al. (2003) I.A.U. Circ. 8237. (1990 OS) (radar obs. binary asteroid)


NEODyS Page of (162000) 1990 OS