Asteroids

2019ES2 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.928

Aphelion (Q)

1.580

Eccentricity (e)

0.260

Inclination (i)

0.9

deg

Orbit period (P)

513.0

Earth MOID

0.00514

U parameter

7.5

Next Earth close approach

Date

2026-04-04

Nominal distance (from Earth center)

0.04569

6835701

Maximum Brightness

24.7

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2019-03-15

Observatory

Mt. Lemmon Survey

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

1.254143

1-sigma variation

0.000329

Unit

Eccentricity (e)

Value

0.259831

1-sigma variation

0.000145

Unit

Inclination (i)

Value

0.9040

1-sigma variation

0.0077

Unit

Long. of Ascending Node (Ω)

Value

343.1556

1-sigma variation

0.1542

Unit

Arg. of Perihelion (ω)

Value

247.0456

1-sigma variation

0.0160

Unit

Mean Anomaly (M)

Value

23.86135

1-sigma variation

1.77630

Unit

Perihelion distance

Value

0.928279

1-sigma variation

Unit

Aphelion distance

Value

1.580008

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.292234

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.070879

1-sigma variation

Unit

MOID

Value

0.005143

1-sigma variation

Unit

Orbit Period

Value

513.0022

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.08311E-7	-4.65966E-8	-2.52927E-6	-5.07341E-5	-2.60591E-6	5.84589E-4
e	-4.65966E-8	2.09602E-8	1.08442E-6	2.17403E-5	1.53930E-6	-2.51630E-4
i	-2.52927E-6	1.08442E-6	5.90838E-5	1.18517E-3	5.90854E-5	-1.36508E-2
Ω	-5.07341E-5	2.17403E-5	1.18517E-3	2.37736E-2	1.18015E-3	-2.73816E-1
ω	-2.60591E-6	1.53930E-6	5.90854E-5	1.18015E-3	2.55155E-4	-1.41255E-2
M	5.84589E-4	-2.51630E-4	-1.36508E-2	-2.73816E-1	-1.41255E-2	3.15524E0

Date of computation: 2026-03-17 23:26 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

25.741

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

19 - 40*

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

[-]

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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

2560

Unit

Source

[1]

Normalized RMS of residuals

Value

0.45862

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2019-03-15.3832

Unit

Source

[2]

Last Observation

Value

2019-03-17.30586

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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

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 2019ES2 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
EARTH	1964-03-15 00:27	> 1 w	0.0638253	0.0027362	0.2335356
EARTH	1971-07-05 19:17	> 1 d	0.0156959	0.0148418	0.0053642
MARS	1971-10-13 06:46	> 1 d	0.0430897	0.0406012	0.0048145
MARS	1977-06-04 16:00	> 1 d	0.0440523	0.0406018	0.0107366
MARS	1983-01-25 15:55	> 1 d	0.0443392	0.0405936	0.0170419
EARTH	1988-03-08 10:20	> 1 d	0.1535007	0.0038674	0.0809243
MARS	1988-09-17 05:22	> 1 w	0.0452791	0.0405930	0.0263789
EARTH	1995-05-12 03:18	> 1 mo	0.0823086	0.0689492	0.0047470
EARTH	2002-07-19 23:45	> 1 d	0.1359007	0.0138074	0.0915833
EARTH	2019-03-20 10:53	< 1 min	0.0195620	0.0194496	0.0000375
EARTH	2026-04-04 14:22	> 1 w	0.0456938	0.0040896	0.0306826
EARTH	2033-05-24 11:03	> 1 w	0.0813816	0.0733508	0.0027008
MARS	2034-03-16 13:29	> 1 d	0.0237777	0.0025069	0.0094789
EARTH	2040-07-06 18:12	> 1 d	0.0136023	0.0135830	0.0001670
EARTH	2047-07-23 07:29	> 1 w	0.1745730	0.0129479	0.2679308
EARTH	2071-03-13 11:01	> 1 mo	0.0951112	0.0065651	0.8407727
EARTH	2078-04-02 12:56	> 1 mo	0.0404684	0.0065485	0.3520509
EARTH	2085-06-23 04:52	> 1 mo	0.0496601	0.0130605	0.5492990
EARTH	2092-07-17 15:50	> 1 mo	0.1014018	0.0131796	1.1734414
EARTH	2116-03-11 17:11	> 1 w	0.1259102	0.0074599	0.3122384
EARTH	2123-04-04 05:25	> 1 mo	0.0412809	0.0071120	0.0894961

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
321.66462197	79.38197544	0.00499109	MINIMUM
43.85827591	184.59987983	0.01369230	MINIMUM
3.17838465	132.47241332	0.08529766	SADDLE
181.77914116	310.95981228	0.58847202	SADDLE
2.92600539	312.15784596	1.91745375	SADDLE
181.78134679	130.97218477	2.58965560	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2019ES2

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2094-03-27.281	85963.281	0.918	0.935	2.09 ± 57.707	6.70E7	6.57E-10	3.15E-1	-9.90	0


Based on 21 optical observations (of which 0 are rejected as outliers) from 2019/03/15.383 to 2019/03/17.306.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.15 and 2.15 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: