(399307) 1991 RJ2

(1991 RJ2 )

Discovery Circumstances:

E. F. Helin - Palomar Mountain

8 Sep 1991

(1)

Orbital Type:

AM

(*)

Taxonomic Type:

-

-

Albedo:

-

-

Diameter:(km)

500 - 1118 m

($)

H:(mag)

18.90

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

3.4907+15.917

( 2)

Quality:

3B !

( 2)

Lightcurve Amplitude:(mag)

0.09

( 2)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

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

! - 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) I.A.U.Circ. 5357

(002) Warner, B.D. et al. (2015 MPB 42, 37-38. ((399307) 1991 RJ2: A NEW NEA BINARY DISCOVERY)


NEODyS Page of (399307) 1991 RJ2