Asteroids

2026HF help

Last update: 2026-05-09 13:30 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.972

Aphelion (Q)

1.713

Eccentricity (e)

0.276

Inclination (i)

3.3

deg

Orbit period (P)

568.1

Earth MOID

0.02212

U parameter

6.7

Next Earth close approach

Date

2040-04-18

Nominal distance (from Earth center)

0.02306

3450039

Maximum Brightness

19.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-16

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

1.342423

1-sigma variation

0.000182

Unit

Eccentricity (e)

Value

0.275725

1-sigma variation

0.000103

Unit

Inclination (i)

Value

3.3239

1-sigma variation

0.0011

Unit

Long. of Ascending Node (Ω)

Value

46.9548

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

124.4323

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

52.79641

1-sigma variation

0.01224

Unit

Perihelion distance

Value

0.972283

1-sigma variation

Unit

Aphelion distance

Value

1.712562

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.478876

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.063906

1-sigma variation

Unit

MOID

Value

0.022123

1-sigma variation

Unit

Orbit Period

Value

568.1098

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.30261E-8	1.86894E-8	1.99711E-7	-4.63932E-9	1.58024E-7	-2.22353E-6
e	1.86894E-8	1.05763E-8	1.13016E-7	-2.62250E-9	8.94167E-8	-1.25829E-6
i	1.99711E-7	1.13016E-7	1.20772E-6	-2.83746E-8	9.56109E-7	-1.34459E-5
Ω	-4.63932E-9	-2.62250E-9	-2.83746E-8	2.54740E-9	-2.56911E-8	3.13162E-7
ω	1.58024E-7	8.94167E-8	9.56109E-7	-2.56911E-8	7.64514E-7	-1.06417E-5
M	-2.22353E-6	-1.25829E-6	-1.34459E-5	3.13162E-7	-1.06417E-5	1.49704E-4

Date of computation: 2026-05-09 13:30 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

25.436

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

22 - 50*

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

0.597823

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-16.200723

Unit

Source

[2]

Last Observation

Value

2026-05-09.24322

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

174 (1)

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 2026HF 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	1950-03-09 13:39	> 1 mo	0.0525233	0.0481187	0.0091945
EARTH	1964-02-01 02:59	> 1 mo	0.0939143	0.0561770	0.2828997
EARTH	1981-05-08 08:45	> 1 w	0.1854356	0.0134575	0.2423997
EARTH	1995-04-13 10:44	> 1 w	0.0251766	0.0218050	0.0108052
EARTH	2009-01-24 18:16	> 1 d	0.1624695	0.0995534	0.0220486
MARS	2020-05-19 07:44	51.8	0.0330589	0.0321398	0.0014969
EARTH	2026-04-20 09:06	< 1 min	0.0250936	0.0250674	0.0000087
EARTH	2040-04-18 20:30	> 1 d	0.0230621	0.0217035	0.0049393
MARS	2058-07-13 00:07	> 1 d	0.0481124	0.0035801	0.2236663
EARTH	2065-01-30 09:50	> 1 w	0.1202007	0.0588477	0.2779609
EARTH	2079-03-23 15:14	> 1 mo	0.0470177	0.0112552	0.0479765
EARTH	2093-04-23 13:13	> 1 w	0.0339833	0.0199239	0.1235861
EARTH	2118-04-23 10:28	> 1 mo	0.0280665	0.0203346	0.2526673

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
27.05007066	101.49791647	0.02212341	MINIMUM
181.36214206	248.57475983	0.70895417	SADDLE
3.07471954	250.17706935	1.97788633	SADDLE
181.92273669	68.99268418	2.70567074	MAXIMUM

Download:

MOID Plots

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