Asteroids

2026PY8 help

Last update: 2026-08-18 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.514

Aphelion (Q)

1.433

Eccentricity (e)

0.472

Inclination (i)

12.0

deg

Orbit period (P)

350.8

Earth MOID

0.04158

U parameter

7.9

Next Earth close approach

Date

2050-08-19

Nominal distance (from Earth center)

0.13083

19571473

Maximum Brightness

22.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-08-14

Observatory

Altay Astronomical Observatory

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

0.973508

1-sigma variation

0.000451

Unit

Eccentricity (e)

Value

0.471982

1-sigma variation

0.000909

Unit

Inclination (i)

Value

11.9655

1-sigma variation

0.0361

Unit

Long. of Ascending Node (Ω)

Value

315.5496

1-sigma variation

0.0048

Unit

Arg. of Perihelion (ω)

Value

134.5237

1-sigma variation

0.0077

Unit

Mean Anomaly (M)

Value

215.66812

1-sigma variation

0.17502

Unit

Perihelion distance

Value

0.514030

1-sigma variation

Unit

Aphelion distance

Value

1.432986

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.116538

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.417331

1-sigma variation

Unit

MOID

Value

0.041582

1-sigma variation

Unit

Orbit Period

Value

350.8388

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.03419E-7	4.09903E-7	1.62523E-5	2.16645E-6	-3.46110E-6	7.89389E-5
e	4.09903E-7	8.26203E-7	3.27670E-5	4.37052E-6	-6.96689E-6	1.59080E-4
i	1.62523E-5	3.27670E-5	1.30006E-3	1.73558E-4	-2.75976E-4	6.30788E-3
Ω	2.16645E-6	4.37052E-6	1.73558E-4	2.32158E-5	-3.67119E-5	8.40994E-4
ω	-3.46110E-6	-6.96689E-6	-2.75976E-4	-3.67119E-5	5.91616E-5	-1.34268E-3
M	7.89389E-5	1.59080E-4	6.30788E-3	8.40994E-4	-1.34268E-3	3.06339E-2

Date of computation: 2026-08-18 13:00 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

25.125

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

25 - 60*

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

0.776261

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-08-14.64448

Unit

Source

[2]

Last Observation

Value

2026-08-18.133241

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

36 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2026PY8 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	1953-08-18 13:33	> 1 d	0.0406313	0.0400733	0.0198228
EARTH	1977-08-19 16:33	85.0	0.0847836	0.0414323	0.1318300
EARTH	1978-08-14 08:40	> 1 d	0.1607857	0.0406511	0.1471615
EARTH	1995-04-15 13:53	> 1 d	0.1984733	0.1980503	0.0073939
EARTH	2001-08-16 08:43	> 1 d	0.1862194	0.0531206	0.0875814
EARTH	2002-08-18 04:09	> 1 d	0.0592625	0.0411895	0.0705198
EARTH	2026-08-19 17:08	< 1 min	0.0470859	0.0467478	0.0001127
EARTH	2050-08-19 15:01	> 1 d	0.1308272	0.0451460	0.0895877
EARTH	2051-08-16 17:47	> 1 d	0.1134295	0.0425432	0.0951568
EARTH	2075-08-19 17:09	> 1 d	0.0428898	0.0427088	0.0128219
EARTH	2099-08-20 17:01	1277.5	0.0876623	0.0439293	0.4106748
EARTH	2100-08-15 11:51	> 1 w	0.1602194	0.0432808	0.4694198
EARTH	2117-04-16 23:13	> 1 w	0.1988977	0.1985825	0.0279786
EARTH	2123-08-18 02:32	> 1 mo	0.1892616	0.0557510	0.4950172
EARTH	2124-08-19 07:52	> 1 w	0.0588865	0.0437610	0.3860210

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
263.32406441	222.17857439	0.04158201	MINIMUM
87.82214789	100.49520330	0.19836998	MINIMUM
174.14544941	162.58119633	0.45566971	SADDLE
353.84797924	336.73533059	0.48402130	SADDLE
357.39426040	162.51710651	1.52622171	SADDLE
180.66701793	346.54510234	2.41057487	MAXIMUM

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MOID Plots

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