Ursa

01838, 1951 GB1, 1951GB1, 1954 UA, 1954UA, 1965 UE, 1965UE, 1971 UC, 1971UC, 1977 UP1, 1977UP1, J51G01B, J54U00A, J65U00E, J71U00C, J77U01P

All data for this body: [vot]

MPC data
Name (number) Ursa (1838)
a 3.21418
e 0.00925
i / sin(i) 21.9948 / 0.37452
q 3.18444
Q 3.24391
ω 29.6503
Node 44.0412
m 70.2235
n 0.1710
Epoch 2460800.5
nobs 7119
nopp 36
Years observed 1951-2025
rms 0.52
Best values
[raw, vot]

Value Standard error
Parent Alauda (702)
 
ap 3.211
ep 0.031
sin(ip) 0.364
G 0.150
H 10.860
Mass
D 42.23 0.237
pV 0.056 0.0027
Value
Rotational Period 16.160
Period quality 3
Spectral Class C
Spectral Class Score 14.063
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
702 Alauda 0 Alauda Novakovic 2019EPSC...13.1671N HCM
702 Alauda 902 Alauda 0.4900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2110 0.0313 0.3645 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
33.49 3.350 3.350 Ali-Lagoa 2018A&A...612A..85A NEATM
34.87 1.600 1.600 Tedesco 2002AJ....123.1056T STM
37.58 1.094 1.094 Ryan&Woodward 2010AJ....140..933R IRAS-STM
39.97 0.630 0.630 Usui 2011PASJ...63.1117U NEATM
40.05 0.380 0.380 Masiero 2014ApJ...791..121M NEATM
40.20 0.730 0.730 Masiero 2012ApJ...759L...8M NEATM
43.52 4.350 4.350 Ali-Lagoa 2018A&A...612A..85A NEATM
48.15 2.094 2.094 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
48.55 0.454 0.454 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.043 0.0137 0.0137 Masiero 2011ApJ...741...68M NEATM
0.044 0.0039 0.0039 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.051 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.057 0.0110 0.0110 Masiero 2012ApJ...759L...8M NEATM
0.070 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.072 0.0073 0.0073 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.084 0.0080 0.0080 Tedesco 2002AJ....123.1056T STM
0.086 0.0170 0.0170 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
10.86 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
16.141 3 Synodic Gross 2003MPBu...30...44G Lightcurve
16.162 3 Synodic Behrend LCDB Lightcurve
16.1635 2 Sidereal Hanus 2013A&A...559A.134H Model
16.1635 2 Sidereal Hanus 2016A&A...586A.108H Model
16.16358 2 Sidereal Durech 2016A&A...587A..48D Model
16.1637 2 Sidereal Durech 2023A&A...675A..24D Model
16.174 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
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
C 0.98 Bus VIS Carvano 2010A&A...510A..43C PHOT
C 0.999 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C C 0.6849 0.6849 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Caa Tholen VIS Lazzaro 2004Icar..172..179L SPEC
Cgh Bus VIS Lazzaro 2004Icar..172..179L SPEC
P C 0.740000 0.250000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC