1989 US1

1989US1, 1996 HZ4, 1996HZ4, 48433, J89U01S, J96H04Z

All data for this body: [vot]

MPC data
Name (number) 1989 US1 (48433)
a 2.63508
e 0.23580
i / sin(i) 13.8923 / 0.24010
q 2.01372
Q 3.25645
ω 340.7407
Node 31.5922
m 122.2691
n 0.2304
Epoch 2460800.5
nobs 4051
nopp 21
Years observed 1989-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.637
ep 0.207
sin(ip) 0.220
G 0.150
H 13.700
Mass
D 12.43 0.085
pV 0.044 0.0039
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 11.309
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6367 0.2069 0.2201 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.15 1.870 1.870 Masiero 2012ApJ...759L...8M NEATM
10.79 0.250 0.250 Usui 2011PASJ...63.1117U NEATM
11.65 1.170 1.170 Ali-Lagoa 2018A&A...612A..85A NEATM
12.69 0.091 0.091 Masiero 2011ApJ...741...68M NEATM
7.91 2.010 2.010 Masiero 2021PSJ.....2..162M NEATM
7.96 2.090 2.090 Masiero 2021PSJ.....2..162M NEATM
8.38 2.130 2.130 Nugent 2016AJ....152...63N NEATM
9.17 1.830 1.830 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0044 0.0044 Masiero 2011ApJ...741...68M NEATM
0.052 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.062 0.0260 0.0260 Masiero 2012ApJ...759L...8M NEATM
0.074 0.0270 0.0420 Masiero 2021PSJ.....2..162M NEATM
0.076 0.0280 0.0450 Masiero 2021PSJ.....2..162M NEATM
0.080 0.1700 0.1700 Nugent 2016AJ....152...63N NEATM
0.084 0.0340 0.0340 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
13.70 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C C 0.5559 0.6250 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.6266 0.6250 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.7023 0.6250 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT