Philia

00280, 1888 UB, 1888UB, I88U00B

All data for this body: [vot]

MPC data
Name (number) Philia (280)
a 2.94091
e 0.11135
i / sin(i) 7.4393 / 0.12948
q 2.61343
Q 3.26840
ω 88.9980
Node 9.8379
m 318.9041
n 0.1954
Epoch 2460800.5
nobs 5037
nopp 43
Years observed 1890-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.943
ep 0.113
sin(ip) 0.132
G 0.150
H 10.980
Mass
D 47.69 0.171
pV 0.043 0.0025
Value
Rotational Period 70.200
Period quality 3
Spectral Class X
Spectral Class Score 11.204
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9431 0.1130 0.1316 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
39.83 2.476 2.476 Ryan&Woodward 2010AJ....140..933R IRAS-STM
41.02 9.590 9.590 Nugent 2016AJ....152...63N NEATM
43.15 0.630 0.630 Usui 2011PASJ...63.1117U NEATM
44.02 14.540 14.540 Masiero 2020PSJ.....1....5M NEATM
44.05 12.450 12.450 Masiero 2021PSJ.....2..162M NEATM
44.42 4.440 4.440 Ali-Lagoa 2018A&A...612A..85A NEATM
44.83 8.970 8.970 Ali-Lagoa 2018A&A...612A..85A NEATM
45.69 2.000 2.000 Tedesco 2002AJ....123.1056T STM
46.72 11.120 11.120 Masiero 2021PSJ.....2..162M NEATM
47.88 9.580 9.580 Ali-Lagoa 2018A&A...612A..85A NEATM
48.12 0.180 0.180 Nugent 2016AJ....152...63N NEATM
49.28 14.870 14.870 Masiero 2021PSJ.....2..162M NEATM
49.94 3.313 3.313 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
51.48 18.640 18.640 Masiero 2017AJ....154..168M NEATM
55.79 12.770 12.770 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.025 0.0650 0.0650 Masiero 2012ApJ...759L...8M NEATM
0.026 0.0163 0.0163 Masiero 2017AJ....154..168M NEATM
0.030 0.0140 0.0270 Masiero 2021PSJ.....2..162M NEATM
0.032 0.0110 0.0170 Masiero 2021PSJ.....2..162M NEATM
0.035 0.0140 0.0140 Ali-Lagoa 2018A&A...612A..85A NEATM
0.035 0.0160 0.0310 Masiero 2021PSJ.....2..162M NEATM
0.035 0.0380 0.0380 Masiero 2020PSJ.....1....5M NEATM
0.039 0.0047 0.0047 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.040 0.0160 0.0160 Ali-Lagoa 2018A&A...612A..85A NEATM
0.040 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.041 0.0080 0.0080 Ali-Lagoa 2018A&A...612A..85A NEATM
0.044 0.0040 0.0040 Tedesco 2002AJ....123.1056T STM
0.059 0.0073 0.0073 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
10.98 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 Behrend LCDB Lightcurve
64.0 1 Synodic Binzel 1987Icar...72..135B Lightcurve
70.26 3 Synodic Pilcher 2011MPBu...38..127P Lightcurve
70.28 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
X 0.93 Bus VIS Carvano 2010A&A...510A..43C PHOT
X 0.998 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.5593 0.5593 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT