Dafydd

18349, 1990 OV4, 1990OV4, 1996 XO5, 1996XO5, J90O04V, J96X05O

All data for this body: [vot]

MPC data
Name (number) Dafydd (18349)
a 2.89067
e 0.22798
i / sin(i) 16.3669 / 0.28179
q 2.23165
Q 3.54970
ω 70.1275
Node 281.7783
m 359.4478
n 0.2005
Epoch 2460800.5
nobs 2554
nopp 23
Years observed 1990-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.889
ep 0.171
sin(ip) 0.310
G 0.150
H 13.780
Mass
D 10.59 0.053
pV 0.063 0.0042
Value
Rotational Period 13.500
Period quality 2
Spectral Class X
Spectral Class Score 2.586
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8889 0.1708 0.3099 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.45 0.070 0.070 Masiero 2011ApJ...741...68M NEATM
10.77 0.080 0.080 Masiero 2014ApJ...791..121M NEATM
11.54 3.970 3.970 Masiero 2021PSJ.....2..162M NEATM
11.81 3.933 3.933 Masiero 2017AJ....154..168M NEATM
13.03 5.640 5.640 Masiero 2012ApJ...759L...8M NEATM
8.29 2.320 2.320 Nugent 2016AJ....152...63N NEATM
9.79 2.580 2.580 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.028 0.0203 0.0203 Masiero 2017AJ....154..168M NEATM
0.040 0.0540 0.0540 Masiero 2012ApJ...759L...8M NEATM
0.044 0.0200 0.0380 Masiero 2021PSJ.....2..162M NEATM
0.060 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM
0.060 0.0270 0.0470 Masiero 2021PSJ.....2..162M NEATM
0.065 0.0045 0.0045 Masiero 2011ApJ...741...68M NEATM
0.070 0.0300 0.0300 Nugent 2016AJ....152...63N 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
13.78 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
13.55 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
13.5502 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
X 0.431 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT