Object Explorer

Other spectra

The SDSS often takes repeat spectra of the same object. Each time that astronomical object is spectroscopically observed with any of the spectrographs connected to the SDSS telescope, it is assigned a separate specObjID. We then select the best spectrum and assign it as sciencePrimary.

Information about each spectroscopic observation is stored in the specObjAll table. The specObj view contains only data for spectra assigned as sciencePrimary.

The table below shows all spectra that were measured for this object.

All Spectra of this Object

specObjId	plate	MJD	fiber	ra	dec	specRa	specDec	sciencePrimary	distanceArcMin	class
7634884328845668352	6781	56274	571	37.99119	0.45341	37.99121	0.45344	1	0.00229840	QSO
458374333526468608	407	51820	484	37.99119	0.45341	37.99122	0.45344	0	0.00280290	QSO
4216640649351065600	3745	55234	529	37.99119	0.45341	37.99120	0.45344	0	0.00220812	QSO
7634891480721190912	6781	56575	597	37.99119	0.45341	37.99121	0.45344	0	0.00229840	QSO
7634887083077332992	6781	56599	581	37.99119	0.45341	37.99121	0.45344	0	0.00229840	QSO

Flux-Matched Spectra of this Object

specObjId	plate	MJD	fiber	ra	dec	specRa	specDec	sciencePrimary	distanceArcMin	class
458374333526468608	407	51820	484	37.99119	0.45341	37.99122	0.45344	0	0.00280290	QSO
4216640649351065600	3745	55234	529	37.99119	0.45341	37.99120	0.45344	0	0.00220812	QSO
7634884328845668352	6781	56274	571	37.99119	0.45341	37.99121	0.45344	1	0.00229840	QSO
7634891480721190912	6781	56575	597	37.99119	0.45341	37.99121	0.45344	0	0.00229840	QSO
7634887083077332992	6781	56599	581	37.99119	0.45341	37.99121	0.45344	0	0.00229840	QSO

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Other spectra

All Spectra of this Object

Flux-Matched Spectra of this Object