Songyuan

1997 JZ7, 1997JZ7, 1998 SC116, 1998SC116, 23686, J97J07Z, J98SB6C

All data for this body: [vot]

MPC data
Name (number) Songyuan (23686)
a 2.68666
e 0.17035
i / sin(i) 12.8415 / 0.22226
q 2.22900
Q 3.14432
ω 60.1239
Node 206.8080
m 103.9579
n 0.2238
Epoch 2460800.5
nobs 2722
nopp 23
Years observed 1997-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.688
ep 0.172
sin(ip) 0.231
G 0.150
H 13.900
Mass
D 5.09 0.103
pV 0.230 0.0259
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.828
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia 0.4400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6875 0.1717 0.2313 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.07 0.107 0.107 Masiero 2011ApJ...741...68M NEATM
5.38 0.403 0.403 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.220 0.0337 0.0337 Masiero 2011ApJ...741...68M NEATM
0.243 0.0404 0.0404 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
13.90 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K 0.657 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.83 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8614 0.8614 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT