1999ER4

1987SB26, 1987ST15, 29830, J87S15T, J87S26B, J99E04R

All data for this body: [vot]

MPC data
Name (number) 1999ER4 (29830)
Packed designation 29830
a 2.78034
e 0.12005
i / sin(i) 5.3250 / 0.09281
q 2.44657
Q 3.11412
ω 139.1885
Node 197.1587
m 185.0646
n 0.2126
Epoch 2459600.5
nobs 2591
nopp 22
Years observed 1987-2022
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.779
ep 0.090
sin(ip) 0.099
Value Standard error
G 0.150
H 13.460
Mass
D 11.91 0.035
pV 0.063 0.0087
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7789 0.0898 0.0990 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]


Value Uncertainty up Uncertainty down Author Reference Method
10.22 2.410 2.410 Masiero 2021PSJ.....2..162M NEATM
10.70 2.920 2.920 Nugent 2016AJ....152...63N NEATM
11.91 0.035 0.035 Masiero 2011ApJ...741...68M NEATM
13.30 3.440 3.440 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]


Value Uncertainty up Uncertainty down Author Reference Method
0.052 0.0210 0.0210 Masiero 2012ApJ...759L...8M NEATM
0.060 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM
0.065 0.0098 0.0098 Masiero 2011ApJ...741...68M NEATM
0.074 0.0350 0.0660 Masiero 2021PSJ.....2..162M 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
13.46 MPC-2022-01-18 MPC-2022-01-18 Phot