Asteroids

2026HP3 help

Last update: 2026-04-28 13:01 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.919

Aphelion (Q)

3.034

Eccentricity (e)

0.535

Inclination (i)

2.2

deg

Orbit period (P)

1015.1

Earth MOID

0.01291

U parameter

8.1

Next Earth close approach

Date

2051-04-28

Nominal distance (from Earth center)

0.04493

6721453

Maximum Brightness

21.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.5

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-04-23

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

1.976675

1-sigma variation

0.003492

Unit

Eccentricity (e)

Value

0.534902

1-sigma variation

0.000873

Unit

Inclination (i)

Value

2.2378

1-sigma variation

0.0027

Unit

Long. of Ascending Node (Ω)

Value

106.7927

1-sigma variation

0.0265

Unit

Arg. of Perihelion (ω)

Value

155.8820

1-sigma variation

0.0232

Unit

Mean Anomaly (M)

Value

2.56613

1-sigma variation

0.00320

Unit

Perihelion distance

Value

0.919347

1-sigma variation

Unit

Aphelion distance

Value

3.034002

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.774844

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.068778

1-sigma variation

Unit

MOID

Value

0.012910

1-sigma variation

Unit

Orbit Period

Value

1015.0821

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.21952E-5	3.04904E-6	9.38527E-6	8.78770E-5	-7.50400E-5	-1.11647E-5
e	3.04904E-6	7.62325E-7	2.34665E-6	2.19586E-5	-1.87481E-5	-2.79160E-6
i	9.38527E-6	2.34665E-6	7.23225E-6	6.68262E-5	-5.68913E-5	-8.60393E-6
Ω	8.78770E-5	2.19586E-5	6.68262E-5	7.01737E-4	-6.13912E-4	-7.94724E-5
ω	-7.50400E-5	-1.87481E-5	-5.68913E-5	-6.13912E-4	5.39957E-4	6.76446E-5
M	-1.11647E-5	-2.79160E-6	-8.60393E-6	-7.94724E-5	6.76446E-5	1.02372E-5

Date of computation: 2026-04-28 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

25.457

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

0.612347

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-04-23.307805

Unit

Source

[2]

Last Observation

Value

2026-04-27.371336

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

43 (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 2026HP3 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	1951-04-19 21:53	> 1 d	0.1055729	0.0565886	0.0175583
EARTH	1962-08-04 16:14	> 1 w	0.0579400	0.0126855	0.1616040
EARTH	1987-08-09 18:48	> 1 w	0.1133962	0.0137223	0.0980634
EARTH	2001-04-15 13:47	> 1 w	0.1526982	0.0374795	0.1955239
EARTH	2012-08-07 20:51	> 1 w	0.0890907	0.0138406	0.2178039
EARTH	2026-04-29 21:07	< 1 min	0.0396015	0.0394361	0.0000551
MARS	2048-11-14 17:40	> 1 w	0.0391580	0.0108223	0.2925773
EARTH	2051-04-28 15:04	> 1 mo	0.0449301	0.0359001	0.1949814
EARTH	2062-08-15 15:57	> 1 mo	0.1790811	0.0158356	0.5062556
EARTH	2076-04-17 18:29	> 1 mo	0.1421082	0.0373302	0.5262549
EARTH	2087-07-29 04:34	> 1 mo	0.0164684	0.0142181	0.1415028
MARS	2123-02-07 16:21	> 1 mo	0.0262867	0.0011597	5.2873028
EARTH	2123-05-23 23:44	> 1 mo	0.0798678	0.0420170	3.1359348

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
24.40828961	201.50532091	0.01291046	MINIMUM
336.80073814	116.53261838	0.03566562	MINIMUM
0.08566659	158.05009487	0.09749622	SADDLE
0.55492835	338.92868591	1.90392615	SADDLE
180.15484795	338.48781781	2.04952543	SADDLE
180.19767457	158.51481879	4.04956421	MAXIMUM

Download:

MOID Plots

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