1999 YS9

1999YS9, 27268, J99Y09S

All data for this body: [vot]

MPC data
Name (number) 1999 YS9 (27268)
a 2.24685
e 0.07487
i / sin(i) 5.9400 / 0.10349
q 2.07864
Q 2.41507
ω 101.5335
Node 36.4576
m 170.9904
n 0.2926
Epoch 2460800.5
nobs 4369
nopp 20
Years observed 1991-2025
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.247
ep 0.127
sin(ip) 0.094
G 0.150
H 14.400
Mass
D 3.29 0.045
pV 0.385 0.0202
Value
Rotational Period 25.515
Period quality 2
Spectral Class Sw
Spectral Class Score 21.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.3600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2467 0.1267 0.0941 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.29 0.045 0.045 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.385 0.0202 0.0202 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.40 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
25.361 2 Sidereal Durech 2023A&A...675A..24D Model
25.5156 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A S 0.6519 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
A S 0.7243 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.56 Bus VIS Carvano 2010A&A...510A..43C PHOT
S L 0.870000 0.130000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S S 0.7636 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.8010 0.3760 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Sw Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC
X 0.564 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT