Asteroids

2026HN1 help

Last update: 2026-05-06 13:15 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.805

Aphelion (Q)

2.819

Eccentricity (e)

0.556

Inclination (i)

7.5

deg

Orbit period (P)

890.7

Earth MOID

0.00955

U parameter

7.7

Next Earth close approach

Date

2060-09-25

Nominal distance (from Earth center)

0.15238

22795038

Maximum Brightness

22.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.7

mag

Diameter

50 - 110*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-18

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

1.811702

1-sigma variation

0.001355

Unit

Eccentricity (e)

Value

0.555782

1-sigma variation

0.000385

Unit

Inclination (i)

Value

7.4671

1-sigma variation

0.0043

Unit

Long. of Ascending Node (Ω)

Value

39.4385

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

248.5331

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

355.94590

1-sigma variation

0.00817

Unit

Perihelion distance

Value

0.804791

1-sigma variation

Unit

Aphelion distance

Value

2.818613

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.578381

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.033677

1-sigma variation

Unit

MOID

Value

0.009551

1-sigma variation

Unit

Orbit Period

Value

890.6940

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.83529E-6	5.21441E-7	5.82371E-6	-1.21617E-6	1.45355E-6	1.10667E-5
e	5.21441E-7	1.48151E-7	1.65463E-6	-3.45538E-7	4.12998E-7	3.14424E-6
i	5.82371E-6	1.65463E-6	1.84800E-5	-3.85929E-6	4.61347E-6	3.51164E-5
Ω	-1.21617E-6	-3.45538E-7	-3.85929E-6	8.06064E-7	-9.63911E-7	-7.33330E-6
ω	1.45355E-6	4.12998E-7	4.61347E-6	-9.63911E-7	1.15684E-6	8.76393E-6
M	1.10667E-5	3.14424E-6	3.51164E-5	-7.33330E-6	8.76393E-6	6.67313E-5

Date of computation: 2026-05-06 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

23.653

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

50 - 110*

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

0.539506

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-18.331563

Unit

Source

[2]

Last Observation

Value

2026-05-05.094124

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

98 (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 2026HN1 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	1953-04-29 15:42	> 1 d	0.0477232	0.0049732	0.0946440
EARTH	1965-09-27 04:10	> 1 w	0.1929630	0.0968203	0.1561747
EARTH	1970-05-15 20:04	> 1 w	0.1055681	0.0006946	0.1803487
EARTH	2004-08-24 11:32	> 1 w	0.1808288	0.0940392	0.0868502
EARTH	2021-09-21 11:07	> 1 d	0.1146015	0.0958541	0.0188839
EARTH	2026-05-06 00:54	< 1 s	0.0235010	0.0234576	0.0000145
EARTH	2060-09-25 05:35	> 1 w	0.1523754	0.0928044	0.1736988
EARTH	2065-05-23 09:12	> 1 mo	0.1421051	0.0034988	0.1825172
EARTH	2082-09-11 17:23	> 1 w	0.1132045	0.0923625	0.1057952
EARTH	2087-05-02 15:33	> 1 w	0.0370951	0.0135668	0.1837145
EARTH	2121-08-29 06:00	> 1 mo	0.1751349	0.0856622	0.8575669
EARTH	2126-04-23 09:47	> 1 mo	0.1936275	0.0098496	1.4756029

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
322.69195011	118.12935637	0.00955054	MINIMUM
38.30148519	250.73978728	0.09522708	MINIMUM
1.89130808	187.11193265	0.23928043	SADDLE
0.15541112	3.76994019	1.78506966	SADDLE
180.23346621	3.50500222	1.84614784	SADDLE
179.83807966	183.29302505	3.82994178	MAXIMUM

Download:

MOID Plots

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