435 Ella

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=October 2019}}

{{Infobox planet

| minorplanet=yes

| background=#D6D6D6

| image=435Ella (Lightcurve Inversion).png

| image_scale =

| caption=A three-dimensional model of 435 Ella based on its light curve

| name=435 Ella

| discoverer=M. F. Wolf
A. Schwassmann

| discovered=11 September 1898

| mpc_name=(435) Ella

| alt_names=1898 DS

| mp_category=Main belt

| epoch=31 July 2016 (JD 2457600.5)

| semimajor={{Convert|2.4492|AU|Gm|abbr=on}}

| perihelion={{Convert|2.0688|AU|Gm|abbr=on}}

| aphelion={{Convert|2.8297|AU|Gm|abbr=on|lk=on}}

| eccentricity=0.15533

| period=3.83 yr (1400.1 d)

| inclination=1.8168°

| asc_node=23.192°

| arg_peri=333.682°

| mean_anomaly=265.450°

| dimensions={{val|41.49|1.5|ul=km}}

| mass=

| density=

| rotation={{Convert|4.623|h|d|abbr=on|lk=on}}

| spectral_type=

| abs_magnitude=10.23

| albedo={{val|0.0831|0.006}}

| mean_motion={{Deg2DMS|0.25713|sup=ms}} / day

| orbit_ref={{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=435;cad=1 |archive-url=https://web.archive.org/web/20200916105910/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=435;cad=1 |url-status=dead |archive-date=16 September 2020 |title=435 Ella (1898 DS) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=10 May 2016}}

| observation_arc=117.60 yr (42955 d)

| uncertainty=0

}}

435 Ella is a typical Main belt asteroid. It was discovered by Max Wolf and A. Schwassmann on 11 September 1898 in Heidelberg. This is the eponymous member of a proposed asteroid family with at least 15 members.

Photometric observations during 1995 show a rotation period of 4.264 hours. 435 Ella is classified as a DCX-type asteroid.

References

{{reflist|refs=

{{citation

| title=A Classification of 6479 Asteroids Into Families by Means of the Wavelet Clustering Method

| last1=Bendjoya | first1=P.

| journal=Astronomy and Astrophysics Supplement

| volume=102 | issue=1 | page=25 | date=November 1993

| bibcode=1993A&AS..102...25B | postscript=. }}

{{citation

| display-authors=1

| last1=Piironen | first1=J.

| last2=Lagerkvist | first2=C.-I.

| last3=Erikson | first3=A.

| last4=Oja | first4=T.

| last5=Magnusson | first5=P.

| last6=Festin | first6=L.

| last7=Nathues | first7=A.

| last8=Gaul | first8=M.

| last9=Velichko | first9=F.

| title=Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids

| journal=Astronomy and Astrophysics Supplement

| volume=128 | issue=3 | pages=525–540 | date=March 1998

| doi=10.1051/aas:1998393 | bibcode=1998A&AS..128..525P | postscript=.

| doi-access=free}}

}}