Groombridge

05657, 1936 QE1, 1936QE1, 1986 RU1, 1986RU1, J36Q01E, J86R01U

All data for this body: [vot]

MPC data
Name (number) Groombridge (5657)
a 2.58700
e 0.16631
i / sin(i) 14.1258 / 0.24405
q 2.15675
Q 3.01725
ω 204.4183
Node 166.5252
m 87.4142
n 0.2369
Epoch 2460800.5
nobs 7735
nopp 27
Years observed 1936-2025
rms 0.47
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.587
ep 0.134
sin(ip) 0.235
G 0.150
H 13.150
Mass
D 7.33 0.237
pV 0.296 0.0269
Value
Rotational Period 7.434
Period quality 3-
Spectral Class S
Spectral Class Score 12.980
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 502 Eunomia -0.8700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5865 0.1338 0.2352 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.42 1.260 1.260 Nugent 2016AJ....152...63N NEATM
7.25 1.085 1.085 Masiero 2011ApJ...741...68M NEATM
7.37 0.247 0.247 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.290 0.1300 0.1300 Nugent 2016AJ....152...63N NEATM
0.296 0.0276 0.0276 Masiero 2011ApJ...741...68M NEATM
0.327 0.2971 0.2971 Masiero 2011ApJ...741...68M 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
13.15 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.4349 3- Synodic Pravec LCDB Lightcurve
7.43566 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.999 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S S 0.9977 0.6360 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT