Brecher

04242, 1979 YA10, 1979YA10, 1981 FQ, 1981FQ, 1987 KC1, 1987KC1, J79Y10A, J81F00Q, J87K01C

All data for this body: [vot]

MPC data
Name (number) Brecher (4242)
a 3.10851
e 0.15545
i / sin(i) 0.2766 / 0.00483
q 2.62530
Q 3.59172
ω 210.9141
Node 29.7024
m 315.8261
n 0.1798
Epoch 2460800.5
nobs 5006
nopp 34
Years observed 1951-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.113
ep 0.179
sin(ip) 0.021
G 0.150
H 12.990
Mass
D 14.11 0.143
pV 0.067 0.0176
Value
Rotational Period 7.600
Period quality 2+
Spectral Class B
Spectral Class Score 9.228
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis -0.2500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1130 0.1791 0.0209 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.11 0.143 0.143 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.067 0.0176 0.0176 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
12.99 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.68 2+ Synodic Chang 2014ApJ...788...17C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B 0.951 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
B B 0.5870 0.5870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT