( 2608) Seneca

(1978 DA )

Discovery Circumstances:

H.-E. Schuster - European Southern Observatory, La Silla

17 Feb 1978

(1)

Orbital Type:

AM

(*)( 2)

Taxonomic Type:

S

( 3)

Albedo:

0.16

( 4)

Diameter:(km)

0.9 km

( 5)

H:(mag)

17.50

(#)

G:

0.15

(#)

U-B:(mag)

0.41

( 6)( 7)

B-V:(mag)

0.83

( 7)( 8)

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

8.

( 9)(10)

Quality:

2 !

( 9)(10)

Lightcurve Amplitude:(mag)

0.5

( 9)(10)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

-

-

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

# - 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

( 1) I.A.U.Circ. 3183

(002) Milani, A. et al. (1989) Icarus 78, 212-269. (Dynamics of planet-crossing asteroids - Classes of orbital behavior - project Spaceguard)

(003) Tholen, D.J. (1989) in "Asteroids II" (Eds. R.P.Binzel et al.), Univ.Ariz.Press, Tucson, USA, pp. 1139-1150.

(004) Lebofsky, L.A. et al. (1979) Astron. J. 84, 885-888. (Radiometry and surface properties of Apollo, Amor, and Aten asteroids) 1978CA, 1978DA, and 1978RA.

(005) Lebofsky, L.A. et al. (1979) Astron. J. 84, 885-888. (Radiometry and surface properties of Apollo, Amor, and Aten asteroids) 1978CA, 1978DA, and 1978RA.

(006) Schuster, H.-E. et al. (1979) Astron. & Astrophys. Suppl. 37, 483-486. (Photoelectric observations of two unusual asteroids - 1978 CA and 1978 DA)

(007) Schuster, H.-E. et al. (1979) Astron. & Astrophys. Suppl. 37, 483-486. (Photoelectric observations of two unusual asteroids - 1978 CA and 1978 DA)

(008) Degewij, J. et al. (1978) I.A.U. Circ. 3193. (1978 CA, 1978 DA - U-B, B-V, rotation period, sizes)

(009) Schuster, H.-E. et al. (1979) Astron. & Astrophys. Suppl. 37, 483-486. (Photoelectric observations of two unusual asteroids - 1978 CA and 1978 DA)

(010) Degewij, J. (1978) Messenger 13, 5. (The sizes of 1978 CA and 1978 DA)


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