Asteroids

2026HR help

Last update: 2026-04-23 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.899

Aphelion (Q)

1.718

Eccentricity (e)

0.313

Inclination (i)

2.9

deg

Orbit period (P)

546.5

Earth MOID

0.01527

U parameter

8.1

Next Earth close approach

Date

2029-04-21

Nominal distance (from Earth center)

0.04836

7235035

Maximum Brightness

22.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-17

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

1.308145

1-sigma variation

0.001166

Unit

Eccentricity (e)

Value

0.312955

1-sigma variation

0.000787

Unit

Inclination (i)

Value

2.9059

1-sigma variation

0.0074

Unit

Long. of Ascending Node (Ω)

Value

167.2211

1-sigma variation

0.0141

Unit

Arg. of Perihelion (ω)

Value

104.4470

1-sigma variation

0.0094

Unit

Mean Anomaly (M)

Value

358.05575

1-sigma variation

0.01404

Unit

Perihelion distance

Value

0.898754

1-sigma variation

Unit

Aphelion distance

Value

1.717536

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.287397

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.087160

1-sigma variation

Unit

MOID

Value

0.015273

1-sigma variation

Unit

Orbit Period

Value

546.4901

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35952E-6	9.17394E-7	8.56563E-6	1.59182E-5	-1.04979E-5	1.63605E-5
e	9.17394E-7	6.19058E-7	5.78073E-6	1.07496E-5	-7.08989E-6	1.10391E-5
i	8.56563E-6	5.78073E-6	5.40498E-5	1.01268E-4	-6.68914E-5	1.02980E-4
Ω	1.59182E-5	1.07496E-5	1.01268E-4	1.98029E-4	-1.31927E-4	1.90393E-4
ω	-1.04979E-5	-7.08989E-6	-6.68914E-5	-1.31927E-4	8.81181E-5	-1.25463E-4
M	1.63605E-5	1.10391E-5	1.02980E-4	1.90393E-4	-1.25463E-4	1.97015E-4

Date of computation: 2026-04-23 13:01 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

26.011

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

17 - 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

[-]

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.429928

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-17.267087

Unit

Source

[2]

Last Observation

Value

2026-04-22.91294

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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 2026HR 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	1996-09-06 15:23	> 1 w	0.1904661	0.0133634	0.2326393
EARTH	1999-09-01 14:48	> 1 w	0.0968214	0.0149066	0.2264077
EARTH	2002-08-25 23:27	> 1 w	0.0233787	0.0157687	0.1350334
EARTH	2005-08-23 03:23	> 1 d	0.0165414	0.0158755	0.0113412
EARTH	2008-08-18 06:16	> 1 w	0.0383089	0.0152727	0.0798978
EARTH	2011-08-04 21:51	> 1 mo	0.0839892	0.0092614	0.0673120
EARTH	2014-07-13 18:32	> 1 mo	0.1168426	0.0372477	0.0268712
EARTH	2017-06-21 16:54	> 1 mo	0.1266798	0.1244281	0.0010396
EARTH	2020-05-30 17:44	> 1 w	0.1144143	0.0676834	0.0164414
EARTH	2023-05-09 07:43	> 1 d	0.0790196	0.0384486	0.0171010
EARTH	2026-04-27 07:04	< 1 min	0.0425101	0.0422184	0.0000972
EARTH	2029-04-21 03:26	> 1 d	0.0483632	0.0375238	0.0154802
EARTH	2032-04-15 03:34	> 1 d	0.1126800	0.0369259	0.0468517
EARTH	2102-09-04 12:00	> 1 w	0.1178665	0.0125101	0.2500944
EARTH	2105-08-29 16:43	> 1 w	0.0446999	0.0137844	0.1982123
EARTH	2108-08-25 15:44	> 1 d	0.0146457	0.0140537	0.0044431
EARTH	2111-08-27 06:45	> 1 w	0.0188296	0.0139859	0.0580669
EARTH	2114-09-02 10:46	> 1 w	0.0873893	0.0127901	0.2013049
EARTH	2117-09-08 04:01	> 1 w	0.1817779	0.0107037	0.2750986

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
44.17828800	226.55866911	0.01527279	MINIMUM
316.68473877	108.80046647	0.03756449	MINIMUM
359.83727038	166.81087585	0.12666871	SADDLE
180.21115006	347.55370556	0.73639940	SADDLE
0.60649117	347.90265549	1.88208115	SADDLE
180.40657875	167.69773419	2.73321323	MAXIMUM

Download:

MOID Plots

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