Beiyou

1999 JA6, 1999JA6, A1810, J99J06A

All data for this body: [vot]

MPC data
Name (number) Beiyou (101810)
a 3.22916
e 0.16034
i / sin(i) 26.2418 / 0.44216
q 2.71138
Q 3.74693
ω 117.9201
Node 117.6378
m 175.7308
n 0.1699
Epoch 2460800.5
nobs 1341
nopp 21
Years observed 1992-2025
rms 0.83
Best values
[raw, vot]

Value Standard error
Parent Euphrosyne (31)
 
ap 3.230
ep 0.159
sin(ip) 0.432
G 0.150
H 14.140
Mass
D 8.02 0.137
pV 0.083 0.0175
Value
Rotational Period 4.400
Period quality 2
Spectral Class C
Spectral Class Score 2.025
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
31 Euphrosyne 0 Euphrosyne Novakovic 2019EPSC...13.1671N HCM
31 Euphrosyne 901 Euphrosyne Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2298 0.1592 0.4318 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.02 0.137 0.137 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.083 0.0175 0.0175 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
14.14 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.44 2 Synodic Chang 2016ApJS..227...20C Lightcurve
4.44776 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.26 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.2508 0.2508 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT