Grauer

18871, 1988 GR1, 1988GR1, 1990 UD11, 1990UD11, 1991 CG4, 1991CG4, 1997 JL16, 1997JL16, 1999 VQ12, 1999VQ12, J88G01R, J90U11D, J91C04G, J97J16L, J99V12Q

All data for this body: [vot]

MPC data
Name (number) Grauer (18871)
a 2.66753
e 0.10824
i / sin(i) 11.8978 / 0.20617
q 2.37880
Q 2.95626
ω 320.6191
Node 217.9352
m 195.3468
n 0.2262
Epoch 2460800.5
nobs 3972
nopp 25
Years observed 1988-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.668
ep 0.147
sin(ip) 0.217
G 0.150
H 12.760
Mass
D 8.30 0.027
pV 0.291 0.0185
Value
Rotational Period 9.876
Period quality 2
Spectral Class S
Spectral Class Score 9.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia 0.4000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6683 0.1471 0.2170 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.92 0.130 0.130 Masiero 2014ApJ...791..121M NEATM
8.08 0.210 0.210 Masiero 2014ApJ...791..121M NEATM
8.31 0.029 0.029 Masiero 2011ApJ...741...68M NEATM
8.61 0.139 0.139 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.262 0.0674 0.0674 Masiero 2011ApJ...741...68M NEATM
0.283 0.0276 0.0276 Masiero 2011ApJ...741...68M NEATM
0.300 0.0300 0.0300 Masiero 2014ApJ...791..121M NEATM
0.310 0.0600 0.0600 Masiero 2014ApJ...791..121M 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
12.76 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.8757 2 Sidereal Durech 2023A&A...675A..24D Model
9.87582 2 Sidereal Durech 2020A&A...643A..59D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT