Engelhardt

04217, 1944 RL, 1944RL, 1951 RY1, 1951RY1, 1970 AA, 1970AA, 1988 BO2, 1988BO2, J44R00L, J51R01Y, J70A00A, J88B02O

All data for this body: [vot]

MPC data
Name (number) Engelhardt (4217)
a 2.31438
e 0.21166
i / sin(i) 23.1285 / 0.39280
q 1.82451
Q 2.80424
ω 348.7847
Node 355.4009
m 336.1955
n 0.2799
Epoch 2460800.5
nobs 7509
nopp 27
Years observed 1944-2025
rms 0.46
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.314
ep 0.245
sin(ip) 0.370
G 0.150
H 12.550
Mass
D 8.74 0.356
pV 0.231 0.0455
Value
Rotational Period 3.066
Period quality 3
Spectral Class S
Spectral Class Score 13.948
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
25 Phocaea 0 Phocaea Novakovic 2019EPSC...13.1671N HCM
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3139 0.2452 0.3704 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.74 0.356 0.356 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.231 0.0455 0.0455 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
12.55 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.06592 3 Synodic Behrend LCDB Lightcurve
3.066 3 Synodic Warner 2005MPBu...32...29W Lightcurve
3.0661 3 Synodic Warner 2012MPBu...39...69W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.728 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.95 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9467 0.9467 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT