1999 SW7

1999SW7, 18054, 1991 XT2, 1991XT2, J91X02T, J99S07W

All data for this body: [vot]

MPC data
Name (number) 1999 SW7 (18054)
a 5.24863
e 0.01759
i / sin(i) 19.6544 / 0.33635
q 5.15630
Q 5.34095
ω 133.2201
Node 124.7872
m 136.3428
n 0.0820
Epoch 2460800.5
nobs 3341
nopp 30
Years observed 1955-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 10.740
Mass
D 36.35 0.354
pV 0.071 0.0046
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 16.303
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
36.18 0.720 0.720 Grav 2011ApJ...742...40G NEATM
36.22 0.410 0.410 Grav 2012ApJ...759...49G NEATM
46.79 3.310 3.310 Usui 2011PASJ...63.1117U NEATM
47.91 9.580 9.580 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.046 0.0180 0.0180 Ali-Lagoa 2018A&A...612A..85A NEATM
0.071 0.0050 0.0050 Grav 2012ApJ...759...49G NEATM
0.085 0.0160 0.0160 Grav 2011ApJ...742...40G 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
10.74 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
D DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
D 0.74 Bus VIS Carvano 2010A&A...510A..43C PHOT
D C 0.550000 0.250000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
D D 0.7353 0.8770 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D D 0.9435 0.8770 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT