value	quality	siderealorsynodic	author	ref	method
6.2600		Synodic	Padova	1921MmSAI...2...82P	Lightcurve
6.3600	3-	Synodic	Behrend	LCDB	Lightcurve
6.4000		Synodic	Bianchi	1920MmSAI...1...39B	Lightcurve
6.4154	3	Sidereal	Chang	LCDB	Model
6.4171	2	Sidereal	Cailliate	LCDB	Model
6.4200		Synodic	Lagerkvist	1987A&AS...68..295L	Lightcurve
6.4200		Synodic	Lagerkvist	1988A&AS...73..395L	Lightcurve
6.4200	3	Synodic	Groeneveld	1954ApJ...120..529G	Lightcurve
6.4200	3	Synodic	Shatzel	1954ApJ...120..547S	Lightcurve
6.4210		Synodic	Lagerkvist	1989A&AS...78..519L	Lightcurve
6.4214	2	Sidereal	Durech	2023A&A...675A..24D	Model
6.4214	2	Sidereal	Magnusson	1983acm..proc...77M	Model
6.4214	2	Sidereal	Magnusson	1986Icar...68....1M	Model
6.4214	2	Sidereal	Taylor	1983Icar...54...13T	Model
6.4214	2	Sidereal	De Angelis	1993P&SS...41..285D	Model
6.4214	2	Sidereal	Kaasalainen	2002A&A...383L..19K	Model
6.4215	2	Sidereal	Cellino	2019A&A...631A..67C	Model
6.4215	3	Synodic	Behrend	LCDB	Lightcurve
6.4220		Synodic	Harris	1989Icar...81..365H	Lightcurve
6.4220	2	Synodic	Di Martino	1987Icar...69..338D	Lightcurve
6.4220	3-	Synodic	Shevchenko	2014MPBu...41..195S	Lightcurve
6.4220	3	Synodic	Birch	1983Icar...54....1B	Lightcurve
6.4220	3	Synodic	Harris	1983Icar...54...59H	Lightcurve
6.4220	3	Synodic	Rosenbush	2009Icar..201..655R	Lightcurve
6.4220	3	Synodic	Yang	LCDB	Lightcurve
6.4700		Synodic	Gehrels	1962ApJ...135..906G	Lightcurve
6.4800	2+	Synodic	Zappala	1979Icar...40..289Z	Lightcurve