Ryugu

1999 JU3, 1999JU3, G2173, J99J03U

All data for this body: [vot]

MPC data
Name (number) Ryugu (162173)
a 1.19096
e 0.19105
i / sin(i) 5.8667 / 0.10222
q 0.96343
Q 1.41850
ω 211.6098
Node 251.2936
m 118.9955
n 0.7583
Epoch 2460800.5
nobs 4876
nopp 8
Years observed 1986-2025
rms 0.42
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 19.550
Mass
D 0.96 0.460
pV 0.029 0.0290
Value
Rotational Period 7.620
Period quality 2
Spectral Class C
Spectral Class Score 54.224
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.96 0.460 0.460 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.029 0.0170 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
19.55 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.404 2 Synodic Warner 2021MPBu...48...30W Lightcurve
7.625 2 Synodic Kim 2013A&A...550L..11K Lightcurve
7.627 2 Synodic Abe 2008LPI....39.1594A Lightcurve
7.63 Synodic Muller 2011A&A...525A.145M Lightcurve
7.631 1 Synodic Moskovitz 2013Icar..224...24M Lightcurve
7.6312 2 Sidereal Muller 2017A&A...599A.103M Model
7.63262 Synodic Watanabe 2019Sci...364..268W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC
C Bus-DeMeo VISNIR Campin 2013AJ....146...26C SPEC
C Bus-DeMeo VISNIR Pinilla-Allonso 2013A&A...552A..79P SPEC
C 0.960000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C B 0.770000 0.230000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C C 0.0190 0.0160 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C/B Tholen VIS Hasegawa 2018PASJ...70..114H PHOT
Cg Tholen VIS Binzel 2001Icar..151..139B SPEC
U Bus-DeMeo VISNIR Binzel 2019Icar..324...41B SPEC
Xk Bus-DeMeo NIR Marsset 2022AJ....163..165M SPEC