1981EN30

17389, 1998HE64, J81E30N, J98H64E

All data for this body: [vot]

MPC data
Name (number) 1981EN30 (17389)
Packed designation 17389
a 3.10241
e 0.18360
i / sin(i) 1.9352 / 0.03377
q 2.53281
Q 3.67201
ω 278.1687
Node 58.7789
m 11.5413
n 0.1804
Epoch 2459600.5
nobs 2063
nopp 23
Years observed 1981-2021
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.107
ep 0.150
sin(ip) 0.023
Value Standard error
G 0.150
H 13.360
Mass
D 11.00 0.106
pV 0.042 0.0071
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 602 Themis -0.2700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1065 0.1505 0.0231 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.97 0.106 0.106 Masiero 2011ApJ...741...68M NEATM
11.56 3.219 3.219 Masiero 2017AJ....154..168M NEATM
13.25 3.210 3.210 Masiero 2012ApJ...759L...8M NEATM
13.42 3.520 3.520 Masiero 2020PSJ.....1....5M NEATM
13.84 4.440 4.440 Nugent 2016AJ....152...63N NEATM
14.70 1.400 1.400 Tedesco 2002AJ....123.1056T STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.036 0.0080 0.0080 Tedesco 2002AJ....123.1056T STM
0.040 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.050 0.0300 0.0300 Masiero 2020PSJ.....1....5M NEATM
0.053 0.0990 0.0990 Masiero 2012ApJ...759L...8M NEATM
0.066 0.0608 0.0608 Masiero 2017AJ....154..168M NEATM
0.073 0.0197 0.0197 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.36 MPC-2022-01-18 MPC-2022-01-18 Phot