Druzhba

01621, 1926 TM, 1926TM, 1927 AE, 1927AE, 1931 EO, 1931EO, 1946 UH, 1946UH, 1949 QS1, 1949QS1, 1951 EK1, 1951EK1, 1951 ER1, 1951ER1, 1958 GA, 1958GA, 1979 QP4, 1979QP4, J26T00M, J27A00E, J31E00O, J46U00H, J49Q01S, J51E01K, J51E01R, J58G00A, J79Q04P

All data for this body: [vot]

MPC data
Name (number) Druzhba (1621)
a 2.23032
e 0.11888
i / sin(i) 3.1723 / 0.05534
q 1.96517
Q 2.49546
ω 238.4066
Node 181.8218
m 181.5780
n 0.2959
Epoch 2460800.5
nobs 5292
nopp 43
Years observed 1926-2025
rms 0.61
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.230
ep 0.127
sin(ip) 0.062
G 0.150
H 11.810
Mass
D 11.85 0.160
pV 0.259 0.0242
Value
Rotational Period 99.000
Period quality 3
Spectral Class S
Spectral Class Score 30.161
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.6500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2300 0.1272 0.0625 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.80 1.080 1.080 Ali-Lagoa 2018A&A...612A..85A NEATM
11.60 1.160 1.160 Ali-Lagoa 2018A&A...612A..85A NEATM
11.70 0.200 0.200 Usui 2011PASJ...63.1117U NEATM
12.69 0.300 0.300 Masiero 2012ApJ...759L...8M NEATM
9.08 0.800 0.800 Tedesco 2002AJ....123.1056T STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.237 0.0460 0.0460 Tedesco 2002AJ....123.1056T STM
0.244 0.0390 0.0390 Masiero 2012ApJ...759L...8M NEATM
0.274 0.0550 0.0550 Ali-Lagoa 2018A&A...612A..85A NEATM
0.316 0.0630 0.0630 Ali-Lagoa 2018A&A...612A..85A 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
11.81 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
12.0 1 Synodic Wisniewski 1997Icar..126..395W Lightcurve
41.0 2 Synodic Behrend LCDB Lightcurve
47.9 1 Synodic Ditteon 2007MPBu...34...59D Lightcurve
99.1 2 Sidereal Hanus 2016A&A...586A.108H Model
99.10018 2 Sidereal Martikainen 2021A&A...649A..98M Model
99.2 3 Synodic Stephens 2010MPBu...37...28S Lightcurve
99.228 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S S 0.7987 0.9120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
A 0.143 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.98 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S S 0.9415 0.9120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9599 0.9120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
SI Bus VIS Lazzaro 2004Icar..172..179L SPEC