Gretia

00984, 1910 BA, 1910BA, 1915 DA, 1915DA, 1922 QD, 1922QD, 1973 LC, 1973LC, J10B00A, J15D00A, J22Q00D, J73L00C

All data for this body: [vot]

MPC data
Name (number) Gretia (984)
a 2.80564
e 0.19494
i / sin(i) 9.0930 / 0.15804
q 2.25871
Q 3.35258
ω 55.2863
Node 314.1282
m 293.2029
n 0.2097
Epoch 2460800.5
nobs 7729
nopp 51
Years observed 1915-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.804
ep 0.153
sin(ip) 0.177
G 0.150
H 9.560
Mass
D 35.07 0.139
pV 0.346 0.0191
Value
Rotational Period 5.770
Period quality 3
Spectral Class A
Spectral Class Score 21.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8040 0.1526 0.1767 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
31.91 3.100 3.100 Tedesco 2002AJ....123.1056T STM
32.02 0.600 0.600 Masiero 2014ApJ...791..121M NEATM
32.45 0.310 0.310 Masiero 2014ApJ...791..121M NEATM
33.20 0.700 0.700 Hanus 2018Icar..309..297H RADIOMETRY_TPM
33.47 2.153 2.153 Ryan&Woodward 2010AJ....140..933R IRAS-STM
33.61 3.360 3.360 Ali-Lagoa 2018A&A...612A..85A NEATM
33.95 0.618 0.618 Masiero 2011ApJ...741...68M NEATM
34.91 0.470 0.470 Usui 2011PASJ...63.1117U NEATM
36.50 3.213 3.213 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
36.60 0.187 0.187 Masiero 2011ApJ...741...68M NEATM
36.65 3.660 3.660 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.222 0.0440 0.0440 Ali-Lagoa 2018A&A...612A..85A NEATM
0.264 0.0530 0.0530 Ali-Lagoa 2018A&A...612A..85A NEATM
0.339 0.0564 0.0564 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.357 0.0863 0.0863 Masiero 2011ApJ...741...68M NEATM
0.397 0.0520 0.0520 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.399 0.0930 0.0930 Masiero 2011ApJ...741...68M NEATM
0.410 0.0700 0.0700 Masiero 2014ApJ...791..121M NEATM
0.420 0.0400 0.0400 Masiero 2014ApJ...791..121M NEATM
0.424 0.0950 0.0950 Tedesco 2002AJ....123.1056T 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
9.56 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.56 2 Synodic Riccioli 2001P&SS...49..657R Lightcurve
5.76 2 Synodic Van Houten 1962BAN....16..160V Lightcurve
5.776 3 Synodic Behrend LCDB Lightcurve
5.77761 2 Synodic Pal 2020ApJS..247...26P Lightcurve
5.778 2+ Synodic Behrend LCDB Lightcurve
5.77801 2 Sidereal Durech 2023A&A...675A..24D Model
5.778026 2 Sidereal Marciniak 2008LPICo1405.8129M Model
5.77827 3 Synodic Behrend LCDB Lightcurve
5.7789 3 Synodic Schmidt 2017MPBu...44..191S Lightcurve
5.78 3 Synodic Gandolfi 2009P&SS...57....1G Lightcurve
5.781 3 Synodic Di Martino 1984Icar...60..541D Lightcurve
5.781 3 Synodic Piironen 1994A&AS..106..587P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
A 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
A 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 0.942 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Sa Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
Sr Bus VIS Bus 2002Icar..158..146B SPEC