621 Werdandi

{{Use dmy dates|date=June 2017}}

{{Infobox planet

| minorplanet= yes

| background= #D6D6D6

| name= 621 Werdandi

| image= 621Werdandi (Lightcurve Inversion).png

| image_scale =

| caption= A three-dimensional model of 621 Werdandi based on its light curve

| mpc_name= (621) Werdandi

| alt_names= 1906 WJ

| discoverer= August Kopff

| discovered= 11 November 1906

| discovery_site= Heidelberg

| epoch= 31 July 2016 (JD 2457600.5)

| eccentricity= 0.13840

| semimajor= {{Convert|3.1269|AU|Gm|abbr=on}}

| perihelion= {{Convert|2.6941|AU|Gm|abbr=on}}

| aphelion= {{Convert|3.5597|AU|Gm|abbr=on|lk=on}}

| period= 5.53 yr (2019.6 d)

| inclination= 2.3146°

| asc_node= 67.107°

| arg_peri= 31.965°

| mean_anomaly= 299.847°

| mean_motion= {{Deg2DMS|0.17825|sup=ms}} / day

| orbit_ref= {{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=621;cad=1 |title=621 Werdandi (1906 WJ) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=5 May 2016}}

| observation_arc= 104.13 yr (38035 d)

| uncertainty= 0

| abs_magnitude= 10.49

| rotation= {{Convert|11.776|h|d|abbr=on|lk=on}}

| albedo= {{val|0.1527|0.018}}

| mean_radius= {{val|13.575|0.75}} km

}}

621 Werdandi is a Themistian asteroid.