Barker

07868, 1931 RD1, 1931RD1, 1984 UX2, 1984UX2, J31R01D, J84U02X

All data for this body: [vot]

MPC data
Name (number) Barker (7868)
a 2.68424
e 0.19983
i / sin(i) 11.9810 / 0.20759
q 2.14785
Q 3.22062
ω 324.4686
Node 15.3756
m 114.1722
n 0.2241
Epoch 2460800.5
nobs 4118
nopp 27
Years observed 1931-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent Adeona (145)
 
ap 2.683
ep 0.168
sin(ip) 0.201
G 0.150
H 12.880
Mass
D 15.13 0.045
pV 0.046 0.0032
Value
Rotational Period 11.235
Period quality 2
Spectral Class Ch
Spectral Class Score 21.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
145 Adeona 0 Adeona Novakovic 2019EPSC...13.1671N HCM
145 Adeona 505 Adeona 0.4500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6830 0.1683 0.2012 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.03 3.460 3.460 Masiero 2021PSJ.....2..162M NEATM
13.49 5.770 5.770 Masiero 2012ApJ...759L...8M NEATM
14.03 3.690 3.690 Masiero 2021PSJ.....2..162M NEATM
14.95 0.050 0.050 Masiero 2014ApJ...791..121M NEATM
15.11 4.770 4.770 Masiero 2020PSJ.....1....5M NEATM
15.77 4.353 4.353 Masiero 2017AJ....154..168M NEATM
15.91 0.111 0.111 Masiero 2011ApJ...741...68M NEATM
16.19 0.360 0.360 Usui 2011PASJ...63.1117U NEATM
16.46 1.260 1.260 Nugent 2016AJ....152...63N NEATM
17.42 1.740 1.740 Ali-Lagoa 2018A&A...612A..85A NEATM
18.43 1.400 1.400 Tedesco 2002AJ....123.1056T STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0048 0.0048 Masiero 2011ApJ...741...68M NEATM
0.040 0.0070 0.0070 Tedesco 2002AJ....123.1056T STM
0.040 0.0100 0.0100 Nugent 2016AJ....152...63N NEATM
0.042 0.0440 0.0440 Masiero 2020PSJ.....1....5M NEATM
0.046 0.0200 0.0370 Masiero 2021PSJ.....2..162M NEATM
0.048 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.053 0.0259 0.0259 Masiero 2017AJ....154..168M NEATM
0.060 0.0260 0.0260 Masiero 2012ApJ...759L...8M NEATM
0.079 0.0320 0.0550 Masiero 2021PSJ.....2..162M NEATM
0.090 0.0100 0.0100 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
12.88 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
11.2358 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
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.56 Bus VIS Carvano 2010A&A...510A..43C PHOT
C 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C C 0.8151 0.8151 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Caa Tholen VIS Lazzaro 2004Icar..172..179L SPEC
Ch Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC
U Bus VIS Lazzaro 2004Icar..172..179L SPEC
X 0.900 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT