SDLCD

Citation: If the available data are used in any scientific or academic publications, this work should be properly cited and acknowledged. Please, use the following reference to cite the work.
Ephemeris: To get the object’s ephemeris, visit online service SatField.

light curves	2224
oldest	2016-01-18
latest	2024-06-25
objects	791
spacecrafts	212
rocket bodies	521
debris	58
objects with period	419

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Light curve properties

Source: ASCII file containing the light curve data.
Period [sec]: Value of the synodic period.
Following integer numbers are reserved for internal type identification and not represent apparent rotation period value: 5000, 6000, 7000, 9999.
Period error [sec]: Uncertainty of the synodic period estimation.
ADU error: Average uncertainty of the intensity in the ADU units.
Magnitude error: Average uncertainty of the intensity in the magnitudes.
Number of points: Number of measurement points in the light curve.
Exposure [sec]: Exposure time used during measurement acquisition.
APD [sec]: Average point distance.
MedPD [sec]: Median distance/duration between two measurement points in the light curve.
ModePD [sec]: Moderate distance/duration between two measurement points in the light curve.
STDPD [sec]: Standard deviation of the point distance.
Filter: Used type of filter. Available are C and Johnson-Cousins BVRI filters.
AmpMath [mag]: Mathematical amplitude of the light curve calculated as difference of the global extremes of the optimized Fourier function.
AmpDat [mag]: Measured amplitude of the light curve calculated as difference of the global extremes of the light curve. Global extremes were determined as a mean value of data points in an interval ±0.0025mag around the global extremes.
AMErr [mag]: Value of the root-mean-square calculated as:

where O_i are measured data points, C_i corresponding calculated values of the Fourier function and N is the total number of the measurements in the datasets. The parameter AMErr [mag] serves as input value for σ(m) in the next uncertainty calculations.
AmpErr [mag]: Uncertainty of the mathematical amplitude estimation using:

where N is total number of measurements in the data set and σ(m) is a uncertainty in the magnitudes (Montgomery and O’Donoghue, 1999).
PhErr: Uncertainty of the phase estimation calculated using:

where N is total number of measurements in the data set, a is the amplitude of the light curve and σ(m) is a uncertainty in the magnitudes (Montgomery and O’Donoghue, 1999).
fErr [Hz]: Uncertainty of the frequency estimation calculated using:

where N is total number of measurements in the data set, a is the amplitude of the light curve, ∆t is time distance of points in the dataset (e.g. APD parameter) and σ(m) is a uncertainty in the magnitudes (Montgomery and O’Donoghue, 1999).
PErr [sec]: Uncertainty of the period estimation calculated using:

where N is total number of measurements in the data set, a is the amplitude of the light curve, ∆t is time distance of points in the dataset (e.g. APD parameter), P is determined value of the period and σ(m) is a uncertainty in the magnitudes (Montgomery and O’Donoghue, 1999).

Object and orbital properties

Object name: Name of the object as published in USSTRATCOM satellite situation report (SSR).
Object type: Type of the object as published in USSTRATCOM SSR.
NORAD: NORAD number of the object.
Orbital period [min]: Orbital period as published in USSTRATCOM SSR.
Inclination [deg]: Orbital inclination as published in USSTRATCOM SSR.
Perigee [km]: Mean perigee altitude above the Earth surface as published in USSTRATCOM SSR.
Apogee [km]: Mean apogee altitude above the Earth surface as published in USSTRATCOM SSR.
Decayed: Information whether the object is already decayed as published in USSTRATCOM SSR.

References

M. Hamara. Rotation properties of the articial objects in the vicinity of Earth, Dissertation thesis. PhD thesis, Comenius University in Bratislava; Faculty of Mathematics, Physics and Informatics Bratislava, 2017.

M.H. Montgomery and D O’Donoghue. A derivation of the errors for least squares fitting to time series data. Delta Scuti Star Newsletter, 13:28, 1999.

If you have further question, don't hesitate to contact us at jiri.silha@fmph.uniba.sk.

link to database in json format: database

COSPAR	Period [s]	Date	Data	Light Curve
00029A GORIZONT 33	65.8	22-Mar-2019 23:12:02		00029A	Image
00041B CLUSTER II-FM6	9999	18-Nov-2019 17:49:12		00041B	Image
00080B ATLAS 2AS CENTAUR R/B	11.889	25-Jul-2019 02:32:34		00080B	Image
00080B ATLAS 2AS CENTAUR R/B	11.893	06-Aug-2019 23:17:37		00080B	Image
00080B ATLAS 2AS CENTAUR R/B	11.899	18-Aug-2019 22:51:58		00080B	Image
00080B ATLAS 2AS CENTAUR R/B	11.9	28-Aug-2019 01:34:03		00080B	Image
01019D BLOCK DM R/B	5.868	11-Sep-2019 01:01:58		01019D	Image
01019D BLOCK DM R/B	5.884	05-Aug-2019 02:16:23		01019D	Image
01019D BLOCK DM R/B	5.873	23-Oct-2019 21:13:37		01019D	Image
01038B H-2A R/B	57.765	23-Mar-2019 01:53:30		01038B	Image
02003C H-2A R/B	36.767	08-Aug-2019 21:46:19		02003C	Image
02029D SL-12 R/B(2)	7.2218	10-Dec-2019 22:58:09		02029D	Image
02048A INTEGRAL	6000	25-Jun-2019 00:41:48		02048A	Image
03007B ARIANE 44L R/B	211.7	16-Jul-2019 22:26:07		03007B	Image
03012B TITAN 4 CENTAUR R/B	9999	01-Sep-2019 02:01:53		03012B	Image
04041B BREEZE-M R/B	9999	09-Jul-2019 23:55:42		04041B	Image
04043D SL-12 R/B(2)	7.1768	21-Mar-2019 20:43:58		04043D	Image
04043D SL-12 R/B(2)	9999	21-Mar-2019 20:43:58		04043D	Image
06018B DELTA 4 R/B	238.193	08-Aug-2019 20:11:39		06018B	Image
06034B BLOCK DM-SL R/B	95.985	13-Aug-2017 23:29:30		06034B	Image

Details for object with COSPAR:

Object name:

Source

COSPAR:

Period [sec]:

Object type:

Period error [sec]:

N/A

NORAD:

Amplitude [mag]:

N/A

Orbital period:

Amp. error [mag]:

N/A

Inclination [deg]:

Number of points:

Perigee [km]:

Exposure [sec]:

Apogee [km]:

Mean samp. [sec]:

N/A

Decayed:

Filter:

N/A