Arachne

00407, 1895 TB, 1895TB, 1950 UG, 1950UG, I95T00B, J50U00G

All data for this body: [vot]

MPC data
Name (number) Arachne (407)
a 2.62430
e 0.07046
i / sin(i) 7.5210 / 0.13089
q 2.43939
Q 2.80922
ω 80.9975
Node 294.4500
m 177.8800
n 0.2318
Epoch 2460800.5
nobs 8427
nopp 61
Years observed 1899-2025
rms 0.56
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.625
ep 0.040
sin(ip) 0.148
G 0.150
H 9.160
Mass 8.675e+17 2.393e+17
D 94.44 0.466
pV 0.059 0.0030
Value
Rotational Period 22.620
Period quality 3
Spectral Class C
Spectral Class Score 14.800
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6247 0.0397 0.1481 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.0500e+18 Folkner 2014IPNPR.196C...1F Ephem
6.8500e+17 3.3845e+17 3.3845e+17 Fienga INPOP19a Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
103.46 20.690 20.690 Ali-Lagoa 2018A&A...612A..85A NEATM
82.17 2.981 2.981 Ryan&Woodward 2010AJ....140..933R IRAS-STM
85.06 30.750 30.750 Nugent 2016AJ....152...63N NEATM
85.13 26.560 26.560 Masiero 2020PSJ.....1....5M NEATM
87.22 22.760 22.760 Masiero 2020PSJ.....1....5M NEATM
89.29 26.430 26.430 Masiero 2021PSJ.....2..162M NEATM
90.04 31.500 31.500 Masiero 2020PSJ.....1....5M NEATM
90.70 33.710 33.710 Masiero 2021PSJ.....2..162M NEATM
90.85 9.080 9.080 Ali-Lagoa 2018A&A...612A..85A NEATM
91.72 28.881 28.881 Masiero 2017AJ....154..168M NEATM
94.46 0.500 0.500 Nugent 2016AJ....152...63N NEATM
94.54 24.350 24.350 Masiero 2020PSJ.....1....5M NEATM
95.07 5.400 5.400 Tedesco 2002AJ....123.1056T STM
97.54 1.590 1.590 Usui 2011PASJ...63.1117U NEATM
97.78 4.929 4.929 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.038 0.0329 0.0329 Masiero 2017AJ....154..168M NEATM
0.038 0.0230 0.0230 Masiero 2020PSJ.....1....5M NEATM
0.038 0.0160 0.0260 Masiero 2021PSJ.....2..162M NEATM
0.038 0.0180 0.0330 Masiero 2021PSJ.....2..162M NEATM
0.040 0.0330 0.0330 Masiero 2020PSJ.....1....5M NEATM
0.042 0.0390 0.0390 Masiero 2020PSJ.....1....5M NEATM
0.043 0.0170 0.0170 Ali-Lagoa 2018A&A...612A..85A NEATM
0.043 0.0310 0.0310 Masiero 2020PSJ.....1....5M NEATM
0.050 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM
0.053 0.0054 0.0054 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.055 0.0070 0.0070 Tedesco 2002AJ....123.1056T STM
0.056 0.0110 0.0110 Ali-Lagoa 2018A&A...612A..85A NEATM
0.075 0.0054 0.0054 Ryan&Woodward 2010AJ....140..933R IRAS-STM
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
9.16 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
22.62 2 Synodic Behrend LCDB Lightcurve
22.62618 2 Sidereal Martikainen 2021A&A...649A..98M Model
22.6263 2 Sidereal Hanus 2016A&A...586A.108H Model
22.6264 2 Sidereal Durech 2016A&A...587A..48D Model
22.627 3 Synodic Aznar 2016MPBu...43..257A Lightcurve
44.0 1 Synodic Weidenschilling 1990Icar...86..402W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C Bus VIS Luo 2024AJ....167...13L SPEC
C Tholen VIS Fornasier 2014Icar..233..163F SPEC
C 0.960000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
Caa Tholen VIS Lazzaro 2004Icar..172..179L SPEC
Ch Bus VIS Lazzaro 2004Icar..172..179L SPEC
P 0.940000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
X 0.950 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT