1999 YE9

1999YE9, 18884, 1981 RD, 1981RD, 1988 DV4, 1988DV4, J81R00D, J88D04V, J99Y09E

All data for this body: [vot]

MPC data
Name (number) 1999 YE9 (18884)
a 2.58043
e 0.20208
i / sin(i) 12.2999 / 0.21303
q 2.05897
Q 3.10190
ω 27.4031
Node 284.2804
m 199.5493
n 0.2378
Epoch 2460800.5
nobs 3860
nopp 26
Years observed 1952-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.581
ep 0.180
sin(ip) 0.224
G 0.150
H 13.280
Mass
D 6.15 0.033
pV 0.324 0.0120
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 6.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5811 0.1804 0.2238 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.52 0.250 0.250 Masiero 2012ApJ...759L...8M NEATM
5.87 0.140 0.140 Masiero 2014ApJ...791..121M NEATM
6.18 0.034 0.034 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.321 0.0125 0.0125 Masiero 2011ApJ...741...68M NEATM
0.360 0.1000 0.1000 Masiero 2014ApJ...791..121M NEATM
0.366 0.0470 0.0470 Masiero 2012ApJ...759L...8M 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
13.28 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT