Asteroids

2019OU1 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.862

Aphelion (Q)

3.656

Eccentricity (e)

0.618

Inclination (i)

2.1

deg

Orbit period (P)

1240.4

Earth MOID

0.00625

U parameter

7.0

Next Earth close approach

Date

2036-08-11

Nominal distance (from Earth center)

0.17899

26775839

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.6

mag

Diameter

80 - 180*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-07-25

Observatory

Pan-STARRS 1, Haleakala

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.259315

1-sigma variation

0.000789

Unit

Eccentricity (e)

Value

0.618291

1-sigma variation

0.000144

Unit

Inclination (i)

Value

2.1259

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

144.7237

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

241.4267

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

232.17190

1-sigma variation

0.31332

Unit

Perihelion distance

Value

0.862402

1-sigma variation

Unit

Aphelion distance

Value

3.656229

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.991432

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.065897

1-sigma variation

Unit

MOID

Value

0.006252

1-sigma variation

Unit

Orbit Period

Value

1240.4054

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.21873E-7	1.13713E-7	3.62921E-7	5.73534E-8	-3.33439E-8	-2.47080E-4
e	1.13713E-7	2.07929E-8	6.63620E-8	1.04874E-8	-6.09598E-9	-4.51799E-5
i	3.62921E-7	6.63620E-8	2.11867E-7	3.35136E-8	-1.94574E-8	-1.44195E-4
Ω	5.73534E-8	1.04874E-8	3.35136E-8	5.84174E-9	-3.66568E-9	-2.27874E-5
ω	-3.33439E-8	-6.09598E-9	-1.94574E-8	-3.66568E-9	2.86268E-9	1.32480E-5
M	-2.47080E-4	-4.51799E-5	-1.44195E-4	-2.27874E-5	1.32480E-5	9.81691E-2

Date of computation: 2025-07-29 02:36 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

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

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

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

22.592

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

80 - 180*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

2181

Unit

Source

[1]

Normalized RMS of residuals

Value

0.454144

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-07-25.38386

Unit

Source

[2]

Last Observation

Value

2019-08-27.42031

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

91 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2019OU1 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1982-08-12 04:07	> 1 mo	0.1526592	0.0024435	2.2727676
EARTH	1992-08-25 21:05	> 1 w	0.0087864	0.0042242	0.0613738
EARTH	2019-08-28 10:34	< 1 s	0.0068775	0.0068730	0.0000015
EARTH	2036-08-11 05:32	> 1 d	0.1789854	0.0182003	0.0536951

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
333.37598998	232.69985195	0.00625247	MINIMUM
24.30659879	332.19458773	0.03446812	MINIMUM
358.97772462	282.84975024	0.13696766	SADDLE
358.67083832	102.22767642	1.86570284	SADDLE
179.69851137	103.50441293	2.65324288	SADDLE
179.67579996	283.49526673	4.65179665	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out