1981 ED20

1981ED20, 1977 AH2, 1977AH2, 1998 XF52, 1998XF52, 27683, J77A02H, J81E20D, J98X52F

All data for this body: [vot]

MPC data
Name (number) 1981 ED20 (27683)
a 2.37956
e 0.20110
i / sin(i) 4.8761 / 0.08500
q 1.90104
Q 2.85808
ω 76.3499
Node 7.2627
m 73.8123
n 0.2685
Epoch 2460800.5
nobs 1687
nopp 18
Years observed 1977-2025
rms 0.78
Best values
[raw, vot]

Value Standard error
Parent Erigone (163)
 
ap 2.380
ep 0.208
sin(ip) 0.086
G 0.150
H 15.460
Mass
D 5.08 0.029
pV 0.065 0.0125
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
163 Erigone 0 Erigone Novakovic 2019EPSC...13.1671N HCM
163 Erigone 406 Erigone 0.6400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3803 0.2081 0.0865 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.18 1.190 1.190 Masiero 2020PSJ.....1....5M NEATM
4.58 1.540 1.540 Masiero 2021PSJ.....2..162M NEATM
5.08 0.029 0.029 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.064 0.0133 0.0133 Masiero 2011ApJ...741...68M NEATM
0.070 0.0310 0.0550 Masiero 2021PSJ.....2..162M NEATM
0.084 0.0630 0.0630 Masiero 2020PSJ.....1....5M 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
15.46 MPC-2023-12-04 MPC-2023-12-04 Phot