Irmela

01178, 1931 EC, 1931EC, 1940 GC, 1940GC, 1962 JD, 1962JD, 1988 CK6, 1988CK6, J31E00C, J40G00C, J62J00D, J88C06K

All data for this body: [vot]

MPC data
Name (number) Irmela (1178)
a 2.67733
e 0.18624
i / sin(i) 6.9675 / 0.12131
q 2.17869
Q 3.17597
ω 357.4948
Node 169.9268
m 163.8777
n 0.2250
Epoch 2460800.5
nobs 5797
nopp 40
Years observed 1931-2025
rms 0.61
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.679
ep 0.231
sin(ip) 0.114
G 0.150
H 12.060
Mass
D 19.70 0.048
pV 0.062 0.0025
Value
Rotational Period 11.990
Period quality 3
Spectral Class C
Spectral Class Score 14.300
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6787 0.2309 0.1136 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.88 0.767 0.767 Ryan&Woodward 2010AJ....140..933R IRAS-STM
16.69 6.250 6.250 Masiero 2021PSJ.....2..162M NEATM
17.42 3.480 3.480 Ali-Lagoa 2018A&A...612A..85A NEATM
17.50 4.910 4.910 Nugent 2016AJ....152...63N NEATM
17.83 5.690 5.690 Masiero 2021PSJ.....2..162M NEATM
17.90 0.570 0.570 Usui 2011PASJ...63.1117U NEATM
18.41 5.380 5.380 Nugent 2016AJ....152...63N NEATM
18.87 1.890 1.890 Ali-Lagoa 2018A&A...612A..85A NEATM
19.09 0.800 0.800 Tedesco 2002AJ....123.1056T STM
19.66 0.050 0.050 Masiero 2014ApJ...791..121M NEATM
20.68 0.181 0.181 Masiero 2011ApJ...741...68M NEATM
22.50 1.421 1.421 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.050 0.0031 0.0031 Masiero 2011ApJ...741...68M NEATM
0.059 0.0250 0.0440 Masiero 2021PSJ.....2..162M NEATM
0.067 0.0089 0.0089 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.070 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.070 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM
0.072 0.0340 0.0640 Masiero 2021PSJ.....2..162M NEATM
0.080 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.090 0.0180 0.0180 Ali-Lagoa 2018A&A...612A..85A NEATM
0.092 0.0080 0.0080 Tedesco 2002AJ....123.1056T STM
0.106 0.0420 0.0420 Ali-Lagoa 2018A&A...612A..85A NEATM
0.133 0.0129 0.0129 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
12.06 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
11.985 2 Synodic Polakis 2019MPBu...46..400P Lightcurve
11.989 2 Synodic Stephens 2012MPBu...39...80S Lightcurve
11.992 3 Synodic Pilcher LCDB Lightcurve
19.17 2 Synodic Binzel 1987Icar...72..135B 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 Lazzaro 2004Icar..172..179L SPEC
C Tholen VIS Lazzaro 2004Icar..172..179L SPEC
C 0.860000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
X 0.376 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT