Weir

04085, 1981 JY, 1981JY, 1982 XK, 1982XK, 1985 JR, 1985JR, J81J00Y, J82X00K, J85J00R

All data for this body: [vot]

MPC data
Name (number) Weir (4085)
a 2.60595
e 0.10688
i / sin(i) 14.2157 / 0.24557
q 2.32743
Q 2.88447
ω 135.1724
Node 68.6523
m 198.7444
n 0.2343
Epoch 2460800.5
nobs 10427
nopp 30
Years observed 1981-2025
rms 0.40
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.606
ep 0.146
sin(ip) 0.231
G 0.150
H 12.500
Mass
D 9.57 0.047
pV 0.241 0.0242
Value
Rotational Period 14.600
Period quality 2
Spectral Class S
Spectral Class Score 15.296
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.7400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6061 0.1465 0.2310 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.15 2.030 2.030 Ali-Lagoa 2018A&A...612A..85A NEATM
9.22 0.240 0.240 Masiero 2014ApJ...791..121M NEATM
9.58 0.048 0.048 Masiero 2011ApJ...741...68M NEATM
9.66 0.770 0.770 Usui 2011PASJ...63.1117U NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.233 0.0274 0.0274 Masiero 2011ApJ...741...68M NEATM
0.255 0.1020 0.1020 Ali-Lagoa 2018A&A...612A..85A NEATM
0.270 0.0600 0.0600 Masiero 2014ApJ...791..121M 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
12.50 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
14.602 2 Synodic Warner 2006MPBu...33...85W Lightcurve
14.657 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
14.6637 2 Sidereal Durech 2023A&A...675A..24D Model
14.6643 2 Sidereal Durech 2020A&A...643A..59D Model
14.7389 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
S Tholen VIS Xu 1995Icar..115....1X SPEC
S 0.716 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT