1999 RT54

1999RT54, 1977 RA16, 1977RA16, 1991 GK9, 1991GK9, 40478, J77R16A, J91G09K, J99R54T

All data for this body: [vot]

MPC data
Name (number) 1999 RT54 (40478)
a 2.38767
e 0.17823
i / sin(i) 0.8321 / 0.01452
q 1.96211
Q 2.81322
ω 88.5356
Node 188.9011
m 23.0930
n 0.2671
Epoch 2460800.5
nobs 1365
nopp 20
Years observed 1991-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent Massalia (20)
 
ap 2.389
ep 0.169
sin(ip) 0.023
G 0.150
H 15.880
Mass
D 1.69 0.377
pV 0.226 0.1714
Value
Rotational Period 3.887
Period quality 2
Spectral Class Q
Spectral Class Score 2.154
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
20 Massalia 0 Massalia Novakovic 2019EPSC...13.1671N HCM
20 Massalia 404 Massalia -0.6300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3885 0.1688 0.0228 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.69 0.377 0.377 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.226 0.1714 0.1714 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
15.88 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.886734 2 Sidereal Durech 2016A&A...587A..48D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Q 0.359 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT