21795 Masi

21795 Masi
Discovery [1]
Discovered byF. Mallia
Discovery siteCampo Catino Obs.
Discovery date29 September 1999
Designations
(21795) Masi
Named after
Gianluca Masi [1]
(Italian astronomer)
1999 SN9 · 1988 UE
1993 BZ1
main-belt [1][2] · (inner)
Nysa [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc64.45 yr (23,541 d)
Aphelion2.8409 AU
Perihelion1.9222 AU
2.3815 AU
Eccentricity0.1929
3.68 yr (1,342 d)
337.35°
0° 16m 5.52s / day
Inclination1.8376°
337.09°
81.681°
Physical characteristics
2.45 km (calculated)[4]
3.150±0.164 km[5][6]
13.862±0.0121 h[7]
0.20 (assumed)[4]
0.235±0.037[5][6]
S (assumed)[4]
14.7[6]
14.9[2]
14.970±0.004 (R)[7]
15.41±0.14[8]
15.42[4]

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]

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