Keeler

02261, 1977 HC, 1977HC, J77H00C

All data for this body: [vot]

MPC data
Name (number) Keeler (2261)
a 2.37830
e 0.23667
i / sin(i) 22.7468 / 0.38666
q 1.81543
Q 2.94118
ω 100.1373
Node 102.5353
m 35.1800
n 0.2687
Epoch 2460800.5
nobs 5271
nopp 25
Years observed 1977-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent Phocaea (25)
 
ap 2.378
ep 0.220
sin(ip) 0.398
G 0.150
H 13.020
Mass
D 7.67 0.044
pV 0.236 0.0287
Value
Rotational Period 22.810
Period quality 3
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
25 Phocaea 0 Phocaea Novakovic 2019EPSC...13.1671N HCM
25 Phocaea 701 Phocaea -0.3200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3777 0.2201 0.3978 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.32 0.210 0.210 Masiero 2014ApJ...791..121M NEATM
7.69 0.045 0.045 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.219 0.0351 0.0351 Masiero 2011ApJ...741...68M NEATM
0.270 0.0500 0.0500 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
13.02 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
22.7596 2 Synodic Pal 2020ApJS..247...26P Lightcurve
22.813 3 Synodic Dose 2021MPBu...48..375D Lightcurve
23.1 2 Synodic Warner 2011MPBu...38....3W Lightcurve