Blaauw

02145, 1929 XS, 1929XS, 1963 RK, 1963RK, 1976 UF, 1976UF, 1980 TW, 1980TW, J29X00S, J63R00K, J76U00F, J80T00W

All data for this body: [vot]

MPC data
Name (number) Blaauw (2145)
a 3.21536
e 0.10246
i / sin(i) 15.0115 / 0.25901
q 2.88591
Q 3.54481
ω 277.8210
Node 264.2330
m 73.9791
n 0.1709
Epoch 2460800.5
nobs 4609
nopp 33
Years observed 1963-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent Ursula (375)
 
ap 3.217
ep 0.104
sin(ip) 0.284
G 0.150
H 11.030
Mass
D 37.46 0.412
pV 0.072 0.0043
Value
Rotational Period 12.140
Period quality 2+
Spectral Class X
Spectral Class Score 5.862
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
375 Ursula 0 Ursula Novakovic 2019EPSC...13.1671N HCM
375 Ursula 631 Ursula Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2174 0.1036 0.2843 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
30.75 1.917 1.917 Ryan&Woodward 2010AJ....140..933R IRAS-STM
33.32 3.330 3.330 Ali-Lagoa 2018A&A...612A..85A NEATM
34.20 1.900 1.900 Tedesco 2002AJ....123.1056T STM
37.11 0.530 0.530 Usui 2011PASJ...63.1117U NEATM
37.20 2.051 2.051 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
39.52 3.950 3.950 Ali-Lagoa 2018A&A...612A..85A NEATM
40.55 0.850 0.850 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.051 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.051 0.0110 0.0110 Masiero 2012ApJ...759L...8M NEATM
0.071 0.0140 0.0140 Ali-Lagoa 2018A&A...612A..85A NEATM
0.074 0.0084 0.0084 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.087 0.0100 0.0100 Tedesco 2002AJ....123.1056T STM
0.110 0.0128 0.0128 Ryan&Woodward 2010AJ....140..933R IRAS-STM
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
11.03 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
12.1254 2 Sidereal Durech 2020A&A...643A..59D Model
12.1256 2 Sidereal Durech 2023A&A...675A..24D Model
12.141 2+ Synodic Moravec 2012MPBu...39..213M Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C C 0.5446 0.5446 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.977 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT