Ahrensa

00950, 1904 RF, 1904RF, 1921 GG, 1921GG, 1955 SU2, 1955SU2, 1974 VG3, 1974VG3, J04R00F, J21G00G, J55S02U, J74V03G

All data for this body: [vot]

MPC data
Name (number) Ahrensa (950)
a 2.37052
e 0.15973
i / sin(i) 23.5049 / 0.39883
q 1.99188
Q 2.74915
ω 348.5569
Node 181.7160
m 196.1837
n 0.2700
Epoch 2460800.5
nobs 10592
nopp 41
Years observed 1904-2025
rms 0.46
Best values
[raw, vot]

Value Standard error
Parent Phocaea (25)
 
ap 2.372
ep 0.202
sin(ip) 0.390
G 0.150
H 11.340
Mass
D 14.35 0.066
pV 0.196 0.0121
Value
Rotational Period 202.000
Period quality 3
Spectral Class S
Spectral Class Score 52.939
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
25 Phocaea 0 Phocaea Novakovic 2019EPSC...13.1671N HCM
25 Phocaea 701 Phocaea -0.9000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3716 0.2024 0.3897 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.22 0.993 0.993 Ryan&Woodward 2010AJ....140..933R IRAS-STM
13.70 0.260 0.260 Masiero 2014ApJ...791..121M NEATM
14.30 0.070 0.070 Masiero 2011ApJ...741...68M NEATM
15.03 1.800 1.800 Tedesco 2002AJ....123.1056T STM
15.26 3.050 3.050 Ali-Lagoa 2018A&A...612A..85A NEATM
16.21 0.530 0.530 Usui 2011PASJ...63.1117U NEATM
16.59 1.660 1.660 Ali-Lagoa 2018A&A...612A..85A NEATM
16.66 0.410 0.410 Masiero 2012ApJ...759L...8M NEATM
18.62 1.871 1.871 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.125 0.0253 0.0253 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.179 0.0540 0.0540 Tedesco 2002AJ....123.1056T STM
0.199 0.0203 0.0203 Masiero 2011ApJ...741...68M NEATM
0.220 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM
0.231 0.0310 0.0310 Masiero 2012ApJ...759L...8M NEATM
0.231 0.0460 0.0460 Ali-Lagoa 2018A&A...612A..85A NEATM
0.273 0.1090 0.1090 Ali-Lagoa 2018A&A...612A..85A NEATM
0.284 0.0447 0.0447 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
11.34 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
14.947 1 Synodic Behrend LCDB Lightcurve
202.0 3 Synodic Warner 2010MPBu...37...24W Lightcurve
205.28 2 Sidereal Durech 2023A&A...675A..24D Model
205.69 2 Sidereal Durech 2019A&A...631A...2D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus VIS Carvano 2001Icar..149..173C SPEC
S Bus VIS Lazzaro 2004Icar..172..179L SPEC
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.91 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.960000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S S 0.4784 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.4889 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7125 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7781 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9625 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9995 0.6480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S V 0.560000 0.420000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
Sa Bus VIS Bus 2002Icar..158..146B SPEC