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171P/Spahr

Orbital period : 6.70 years

NASA/JPL elements
IAU/MPC elements


On 2018 Dec 07 07h27 UT by Thierry Noel


(Copyright Thierry Noel)

Nuclear magnitude (m2)16.8
m2 standard deviation0.1
Aperture radius used for m26.7 "
r (dist/Sun) 1.805 AU
d (dist/Earth) 0.864 AU
Right ascension04 40 02.91 h m s
Declination-02 19 44.8 ° ' "
MPC report
COD W96
CON Thierry Noel [thierrynoel38a@free.fr]
OBS A. Maury, J.-B. de Vanssay, T. Noel
MEA T. Noel
TEL 0.4-m f/5 Ritchey-Chretien + CCD
COM Aperture radius for m1 : 0.56'
COM Aperture radius for m2 : 6.7"
ACK MPCReport file updated 2018.12.07 18:06:03
AC2 thierrynoel38a@free.fr
NET UCAC-4
0171P        KC2018 12 07.31045 04 40 02.91 -02 19 44.8          16.9 R      W96
0171P        KC2018 12 07.31559 04 40 02.61 -02 19 39.9          16.7 R      W96
0171P        KC2018 12 07.32075 04 40 02.32 -02 19 34.0          16.9 R      W96
InstrumentMarcon RC 400
Instrument typeRitchey-Chretien
Instrument aperture (0=naked eye)400 mm
Instrument focale length2000 mm
Instrument focale/diameter5
CameraAPOGEE
SensorCCD
Sensor temperature-25 °C
Binning2x2
MountVMA 200
AutoguideNo
Exposure details17x1mn
Observatory MPC codeW96
LocationSan Pedro de Atacama, Chile
Reference stars catalogUCAC-4
Used softwaresASTROMETRICA
Resulting picture sampling (scale)1.12 "/pix
Image processingPrism (-dark, /flat), Astrometrica (add), Iris (levels, ddp, crop)
Observation submission date2018 Dec 07 18h08m19s
Observation modification date2018 Dec 07 18h40m08s

(Record n° 20126)

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