1991 EC

1991EC, 12283, 1970 WB1, 1970WB1, 1981 CH1, 1981CH1, 1998 QU25, 1998QU25, J70W01B, J81C01H, J91E00C, J98Q25U

All data for this body: [vot]

MPC data
Name (number) 1991 EC (12283)
a 2.88611
e 0.24684
i / sin(i) 7.4760 / 0.13011
q 2.17370
Q 3.59852
ω 129.0346
Node 2.0648
m 251.7451
n 0.2010
Epoch 2460200.5
nobs 2817
nopp 25
Years observed 1970-2023
rms 0.50
Best values
[raw, vot]

Value Standard error
Parent Yakovlev (5614)
 
ap 2.883
ep 0.277
sin(ip) 0.134
Value Standard error
G 0.150
H 13.450
Mass
D 13.87 0.033
pV 0.033 0.0010
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
5614 Yakovlev 625 Yakovlev 2.1000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8833 0.2770 0.1338 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.71 2.890 2.890 Nugent 2016AJ....152...63N NEATM
12.53 2.990 2.990 Masiero 2021PSJ.....2..162M NEATM
13.02 4.691 4.691 Masiero 2017AJ....154..168M NEATM
13.80 3.880 3.880 Masiero 2021PSJ.....2..162M NEATM
13.83 0.036 0.036 Masiero 2011ApJ...741...68M NEATM
14.13 0.090 0.090 Masiero 2014ApJ...791..121M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.033 0.0010 0.0010 Masiero 2011ApJ...741...68M NEATM
0.048 0.0170 0.0260 Masiero 2021PSJ.....2..162M NEATM
0.050 0.0383 0.0383 Masiero 2017AJ....154..168M NEATM
0.050 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.050 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.050 0.0230 0.0410 Masiero 2021PSJ.....2..162M 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
13.45 MPC-2023-12-04 MPC-2023-12-04 Phot