Asteroids

190166 2005UP156 help

Last update: 2026-08-31 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.117

Aphelion (Q)

3.112

Eccentricity (e)

0.472

Inclination (i)

4.2

deg

Orbit period (P)

1123.0

Earth MOID

0.12726

U parameter

0.0

Next Earth close approach

Date

2057-07-07

Nominal distance (from Earth center)

0.12829

19192311

Maximum Brightness

14.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.2

mag

Diameter

1030

Taxonomic type

Rotation period (T)

40.5

Discovery Information

Discovery Date

2005-10-31

Observatory

Steward Observatory, Kitt Peak-Spacewatch

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.114418

1-sigma variation

5.190E-9

Unit

Eccentricity (e)

Value

0.471596

1-sigma variation

5.472E-9

Unit

Inclination (i)

Value

4.2074

1-sigma variation

8.504E-7

Unit

Long. of Ascending Node (Ω)

Value

193.0895

1-sigma variation

1.975E-5

Unit

Arg. of Perihelion (ω)

Value

91.6692

1-sigma variation

1.840E-5

Unit

Mean Anomaly (M)

Value

323.01153

1-sigma variation

4.003E-6

Unit

Perihelion distance

Value

1.117268

1-sigma variation

Unit

Aphelion distance

Value

3.111569

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.667007

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.622125

1-sigma variation

Unit

MOID

Value

0.127260

1-sigma variation

Unit

Orbit Period

Value

1123.0131

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.69413E-17	1.62961E-19	-7.85743E-16	9.36715E-15	-7.89590E-15	-2.04521E-14
e	1.62961E-19	2.99457E-17	4.15225E-15	7.46773E-15	-4.30755E-15	-1.57297E-15
i	-7.85743E-16	4.15225E-15	7.23260E-13	-1.53885E-12	1.97297E-12	4.69496E-13
Ω	9.36715E-15	7.46773E-15	-1.53885E-12	3.90126E-10	-3.61792E-10	-1.73326E-11
ω	-7.89590E-15	-4.30755E-15	1.97297E-12	-3.61792E-10	3.38428E-10	1.48054E-11
M	-2.04521E-14	-1.57297E-15	4.69496E-13	-1.73326E-11	1.48054E-11	1.60213E-11

Date of computation: 2026-08-31 13:00 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

40.5

Unit

Source

[4]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.79

Unit

mag

Source

[4]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.245

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.23

Unit

Source

[6]

Diameter

Value

1030

Unit

Source

[6]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.6746

0.4939

0.1807

Unit

g-i

g-r

r-i

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Warner, B.D. (2015) MPB 42, 41-53. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 JUNE-OCTOBER) (45 NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)
[7]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8578

Unit

Source

[1]

Unobserved

Value

173

Unit

Source

[1]

Normalized RMS of residuals

Value

0.367786

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-11-24.26581

Unit

Source

[2]

Last Observation

Value

2026-05-20.15951

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

2907 (3)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2017-06-03

Unit

Source

[3]

Last Observation

Value

2017-07-08

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

2 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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Max residual (arcsec):

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Computation parameters

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 190166 2005UP156 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
704 Interamnia	1976-03-02 06:13	< 1 min	0.0168147	0.0168139	0.0000003
EARTH	1977-06-23 13:49	< 1 min	0.1568123	0.1568108	0.0000005
EARTH	2017-07-10 08:41	< 1 s	0.1335076	0.1335076	0.0000000
EARTH	2057-07-07 22:17	< 1 min	0.1282927	0.1282927	0.0000000

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
0.17291983	180.65738149	0.12725995	MINIMUM
359.98321751	0.33492153	2.09936776	SADDLE
179.98901038	0.34962424	2.13192603	SADDLE
180.00041551	180.35637645	4.12635403	MAXIMUM

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MOID Plots

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