1999 RC121

1999RC121, 19655, 1997 HE4, 1997HE4, 1998 KK46, 1998KK46, J97H04E, J98K46K, J99RC1C

All data for this body: [vot]

MPC data
Name (number) 1999 RC121 (19655)
a 2.98834
e 0.05621
i / sin(i) 9.3117 / 0.16181
q 2.82038
Q 3.15630
ω 288.4581
Node 202.7568
m 188.9861
n 0.1908
Epoch 2460800.5
nobs 2853
nopp 24
Years observed 1997-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 2.989
ep 0.078
sin(ip) 0.169
G 0.150
H 13.560
Mass
D 6.83 0.137
pV 0.181 0.0310
Value
Rotational Period 4.775
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -0.5600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9887 0.0778 0.1692 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.83 0.137 0.137 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.181 0.0310 0.0310 Masiero 2011ApJ...741...68M 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
13.56 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.77544 2 Sidereal Durech 2023A&A...675A..24D Model