| discov_num | notes | refcode |
| ALP 21 | 2MASSI J1711457+223204 | |
| Physical companionship to this ultracool dwarf ruled out based on I-J | ||
| color, using I-band photometry taken at WIYN in August 2002. | AlP2007 |
| refcode | metd | author | reference |
| AlP2007 | Ci - | Allen, P.R., Koerner, D.W., McElwain, M.W., Cruz, K.L., & Reid, I.N. | 2007AJ....133..971A |
| AlP2007 | AJ 133, 971, 2007 | ||
| AlP2007 | (deep-imaging search for wide companions to 132 M7-L8 dwarfs, using IRTF NSFCam) |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 17118+2232 | ALP 21 | 2001 | 1 | 53 | 36.6 | 17.10 | N K | 171145.73+223204.4 |