(8)Flora

Designations
Discovered by	J.R. Hind
Discovery date	18 October 1847
MPC designation	(8) Flora
Pronunciation	/ˈflɔːrə/
Named after	Flōra
Minor planet category	Main belt (Flora family)
Adjectives	Florian
Orbital characteristics^[1]
Epoch November 26, 2005 (JD 2453700.5)
Aphelion	380.850 Gm (2.546 AU)
Perihelion	277.995 Gm (1.858 AU)
Semi-major axis	329.422 Gm (2.202 AU)
Eccentricity	0.1561
Orbital period	1193.549 d (3.27 a)
Mean anomaly	156.401°
Inclination	5.886°
Longitude of ascending node	111.011°
Argument of perihelion	285.128°
Proper orbital elements^[2]
Proper semi-major axis	2.2014283 AU
Proper eccentricity	0.1448717
Proper inclination	5.5736218°
Proper mean motion	110.205216 deg / yr
Proper orbital period	3.26663 yr (1193.138 d)
Precession of perihelion	32.016655 arcsec / yr
Precession of the ascending node	−35.510731 arcsec / yr
Physical characteristics
Dimensions	136×136×113 km^[3] 128 km (mean) 145×145×120 km^[4]
Mass	8.47×10¹⁸ kg^[3] 4.3×10¹⁸ kg^[5]^[6]
Mean density	3.13±1.43 g/cm³^[3] ~3.3 g/cm³^[7]
Rotation period	0.533 d (12.799 h)^[1]
Geometric albedo	0.243 (geometric)^[1]
Spectral type	S-type asteroid^[1]
Apparent magnitude	7.9^[8] to 11.6
Absolute magnitude (H)	6.49^[1]
Angular diameter	0.21" to 0.053"

Date: 26 Dec

COD 500
TEL 200newton + CCD
ACK MPCReport file updated 2017.12.27 19:50:44
NET UCAC-4
00008 C2017 12 26.88131 06 59 43.11 +20 27 52.3 11.1 V 500
00008 C2017 12 26.92975 06 59 39.71 +20 28 08.4 11.7 V 500
----- end -----

Orbital elements: (8)
   Perihelion 2017 Sep 3.893729 +/- 375 TT = 21:26:58 (JD 2458000.393729)
Epoch 2017 Dec 27.0 TT = JDT 2458114.5   Earth MOID: 0.6064   Auto-Find
M 33.76128 +/- 70                  (J2000 ecliptic)
n   0.29587576 +/- 0.193            Peri. 285.82264 +/- 110
a   2.23047034 +/- 0.969            Node   114.64350 +/- 26
e   0.2856458 +/- 0.251             Incl.    3.78553 +/- 47
P   3.33                   H 10.2   G 0.15   U 11.7 SR
q 1.59334583 +/- 1.11    Q 2.86759485 +/- 34.6

Data: Astrometrica & FindOrb

Latest Orbital calculation:

00008         C2017 12 26.88131 06 59 43.11 +20 27 52.3          11.1 V      500
00008         C2017 12 26.92975 06 59 39.71 +20 28 08.4          11.7 V      500
00008         C2018 01 05.82403 06 48 10.24 +21 25 18.7          11.5 V      500
00008         C2018 01 05.83010 06 48 09.77 +21 25 19.9          11.3 V      500
----- end -----

Orbital elements: (8)
   Perihelion 2018 Nov 12.160113 +/- 451 TT = 3:50:33 (JD 2458434.660113)
Epoch 2018 Jan 5.0 TT = JDT 2458123.5                        Auto-Find
M 266.85421 +/- 90                  (J2000 ecliptic)
n   0.29935003 +/- 0.155            Peri.   93.02232 +/- 100
a   2.21317884 +/- 0.765            Node   109.18389 +/- 5.2
e   0.0562969 +/- 0.227             Incl.    7.94588 +/- 49
P   3.29                   H 8.9   G 0.15   U 11.5 SR
q 2.08858367 +/- 1.24    Q 2.33777402 +/- 22.4