Asteroids

2026HR5 help

Last update: 2026-05-01 13:15 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.998

Aphelion (Q)

2.257

Eccentricity (e)

0.387

Inclination (i)

5.5

deg

Orbit period (P)

758.2

Earth MOID

0.00011

U parameter

6.3

Next Earth close approach

Date

2053-04-09

Nominal distance (from Earth center)

0.09595

14353760

Maximum Brightness

25.7

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

28.3

mag

Diameter

6 - 13*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-27

Observatory

Catalina Sky 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

1.627213

1-sigma variation

0.000147

Unit

Eccentricity (e)

Value

0.386860

1-sigma variation

0.000056

Unit

Inclination (i)

Value

5.5446

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

38.5751

1-sigma variation

4.531E-5

Unit

Arg. of Perihelion (ω)

Value

194.4249

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

13.52076

1-sigma variation

0.00164

Unit

Perihelion distance

Value

0.997710

1-sigma variation

Unit

Aphelion distance

Value

2.256716

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.219357

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000152

1-sigma variation

Unit

MOID

Value

0.000115

1-sigma variation

Unit

Orbit Period

Value

758.1672

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.16805E-8	8.23367E-9	5.78487E-8	6.62092E-9	-2.84966E-8	-2.42157E-7
e	8.23367E-9	3.12693E-9	2.19707E-8	2.51420E-9	-1.08176E-8	-9.19664E-8
i	5.78487E-8	2.19707E-8	1.55067E-7	1.75233E-8	-7.42808E-8	-6.46781E-7
Ω	6.62092E-9	2.51420E-9	1.75233E-8	2.05267E-9	-9.03754E-9	-7.38288E-8
ω	-2.84966E-8	-1.08176E-8	-7.42808E-8	-9.03754E-9	4.34360E-8	3.16017E-7
M	-2.42157E-7	-9.19664E-8	-6.46781E-7	-7.38288E-8	3.16017E-7	2.70560E-6

Date of computation: 2026-05-01 13:15 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

28.328

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

6 - 13*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.767151

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-27.240996

Unit

Source

[2]

Last Observation

Value

2026-04-28.510983

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

91 (2)

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 2026HR5 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	1952-06-27 22:38	> 1 d	0.1905788	0.0625126	0.0727627
EARTH	1976-04-12 03:03	> 1 d	0.0609729	0.0100262	0.0234328
EARTH	1989-06-01 13:20	> 1 d	0.0515512	0.0370063	0.0112438
EARTH	2026-04-28 11:45	< 1 s	0.0017846	0.0017840	0.0000002
EARTH	2053-04-09 07:02	> 1 d	0.0959490	0.0345312	0.0208303
EARTH	2082-05-23 10:15	> 1 d	0.0432476	0.0279750	0.0070329
EARTH	2109-05-21 08:51	> 1 w	0.0394584	0.0217553	0.0122057

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
350.32557185	113.21409117	0.00011463	MINIMUM
181.01735365	309.53123435	1.26765687	SADDLE
1.88642081	310.64130052	1.98700792	SADDLE
180.68730577	129.32056074	3.26707307	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2026HR5

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2082-04-29.034	81613.034	1.866	0.59 ± 0.000	6.69E3	3.86E-5	1.25E-2	-6.16
2088-04-28.429	83804.429	4.419	1.60 ± 0.000	4.00E4	1.71E-9	1.25E-2	-10.56
2090-04-28.930	84534.930	4.540	1.91 ± 0.000	1.74E4	4.74E-10	1.25E-2	-11.13
2119-04-30.156	95127.156	2.052	0.66 ± 0.000	5.76E5	3.05E-7	1.25E-2	-8.48


Based on 91 optical observations (of which 2 are rejected as outliers) from 2026/04/27.241 to 2026/04/28.511.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.93 and 1.93 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20260501 192438.250 UTC.

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