21795 Masi information

21795 Masi
Discovery
Discovered by	F. Mallia
Discovery site	Campo Catino Obs.
Discovery date	29 September 1999
Designations
MPC designation	(21795) Masi
Named after	Gianluca Masi ; (Italian astronomer)
Alternative designations	1999 SN9 · 1988 UE; 1993 BZ1
Minor planet category	main-belt · (inner); Nysa
Orbital characteristics
	Epoch 23 March 2018 (JD 2458200.5)
	Uncertainty parameter 0
Observation arc	64.45 yr (23,541 d)
Aphelion	2.8409 AU
Perihelion	1.9222 AU
Semi-major axis	2.3815 AU
Eccentricity	0.1929
Orbital period (sidereal)	3.68 yr (1,342 d)
Mean anomaly	337.35°
Mean motion	0° 16m 5.52s / day
Inclination	1.8376°
Longitude of ascending node	337.09°
Argument of perihelion	81.681°
Physical characteristics
Mean diameter	2.45 km (calculated); 3.150±0.164 km
Synodic rotation period	13.862±0.0121 h
Geometric albedo	0.20 (assumed); 0.235±0.037
Spectral type	S (assumed)
Absolute magnitude (H)	14.7; 14.9; 14.970±0.004 (R); 15.41±0.14; 15.42

21795 Masi (provisional designation 1999 SN₉) is a Nysian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers (2 miles) in diameter. It was discovered on 29 September 1999, by Italian amateur astronomer Franco Mallia at the Campo Catino Astronomical Observatory in Lazio, Italy.^[1] The likely S-type asteroid has a rotation period of 13.86 hours.^[4] It was named for Italian astronomer Gianluca Masi.^[1]

^ ^a ^b ^c ^d ^e Cite error: The named reference MPC-object was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference jpldata was invoked but never defined (see the help page).
^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference lcdb was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference WISE was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Waszczak-2015 was invoked but never defined (see the help page).
^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).

[MPC-object-1] Cite error: The named reference MPC-object was invoked but never defined (see the help page).

[jpldata-2] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[Ferret-3] Cite error: The named reference Ferret was invoked but never defined (see the help page).

[lcdb-4] Cite error: The named reference lcdb was invoked but never defined (see the help page).

[Masiero-2011-5] Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).

[WISE-6] Cite error: The named reference WISE was invoked but never defined (see the help page).

[Waszczak-2015-7] Cite error: The named reference Waszczak-2015 was invoked but never defined (see the help page).

[Veres-2015-8] Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).

21795 Masi information

and 3 Related for: 21795 Masi information

21795 Masi

Gianluca Masi

List of minor planet discoverers