Cumulative scoring system for classification

1) Nearby targets:

 - d ≤ 40 Mpc (Vrec ≤ 3000 km/s)                                   => +3      - d ≤ 25 MPc (Vrec ≤ 1800 km/s)                                                   => +6

2) Young targets (at classification):

 - tclass - (tdisc + tlim)/2 ≤ 4                         => +5   - tclass - (tdisc + tlim)/2 ≤ 7                         => +2   - tclass - (tdisc + tlim)/2 ≤ 10                                             => +1

3) Young targets (at discovery):

 - tdisc - tlim ≤ 2                                               => +3   - tdisc - tlim ≤ 5                                                                => +1

4) "Hostless"

 - No apparent host galaxy in the discovery image (or fainter than M(B) > -18)     => +3

5) Remote location on E/SO & halos of spirals:

 - r≥15kpc                                                         => +2   - r≥25kpc                                                     => +4

6) Multiple-SN hosts

 - Host galaxies with more than 3 SNe  (including the new one)             => +2

7) Star-forming environments

 - Arp systems, transients in tidal tails or in dust lanes                         => +1

8) Peculiar light curves

 - Slow light curve rise (≥ 30 days), or fast decline (≥ 1 mag/5days)             => +2

9) Alerts

 - GRB and/or XRF alerts                                     => +4

10) Absolute magnitude criteria:

 - super-luminous transients (M ≤ -20)                                             => +4   - very luminous transients (-20 < M < -19.5)                             => +2   - very faint transients (-15.5 < M < -14.5)             => +2   - ultra-faint transients (M ≥ -14.5)     => +4

11) Pre-discovery variability history

 - past, pre-SN detections                             => +3

12) AGN candidate contamination

 - transient in the galaxy nucleus                                                 => -1

13) Short visibility window

 - object that cannot be follow for more than 3 weeks             => -5

Notes: - tclass = is the time when the classification is expected to be performed; tdisc = is the time of the earliest detection; tlim = is the epoch of the latest pre-discovery limit. - for the host galaxy distance use spectroscopic-z when available, otherwise photo-z; the webpage with the classification targets should contain all the information useful for computing the cumulative score (z, interstellar extinction, cross-ref with catalogues and circulars/astronomic telegrams, visibility window, current relative position of the moon, etc...)