Asteroids

2026TM77 help

Last update: 2026-10-16 13:15 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.996

Aphelion (Q)

3.042

Eccentricity (e)

0.507

Inclination (i)

7.4

deg

Orbit period (P)

1047.9

Earth MOID

0.01289

U parameter

7.6

Next Earth close approach

Date

2049-08-08

Nominal distance (from Earth center)

0.18748

28045959

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-10-13

Observatory

Capricornus Observatory, Csokako

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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.019010

1-sigma variation

0.001766

Unit

Eccentricity (e)

Value

0.506804

1-sigma variation

0.000433

Unit

Inclination (i)

Value

7.4323

1-sigma variation

0.0045

Unit

Long. of Ascending Node (Ω)

Value

16.1960

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

340.3371

1-sigma variation

0.0019

Unit

Mean Anomaly (M)

Value

31.76203

1-sigma variation

0.04193

Unit

Perihelion distance

Value

0.995768

1-sigma variation

Unit

Aphelion distance

Value

3.042252

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.017633

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.870913

1-sigma variation

Unit

MOID

Value

0.012890

1-sigma variation

Unit

Orbit Period

Value

1047.8669

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.11715E-6	7.63797E-7	7.86787E-6	-1.27297E-6	-3.19032E-6	-7.40240E-5
e	7.63797E-7	1.87154E-7	1.92793E-6	-3.11896E-7	-7.82215E-7	-1.81380E-5
i	7.86787E-6	1.92793E-6	1.98681E-5	-3.20973E-6	-8.10964E-6	-1.86826E-4
Ω	-1.27297E-6	-3.11896E-7	-3.20973E-6	5.21266E-7	1.28274E-6	3.02348E-5
ω	-3.19032E-6	-7.82215E-7	-8.10964E-6	1.28274E-6	3.71197E-6	7.56455E-5
M	-7.40240E-5	-1.81380E-5	-1.86826E-4	3.02348E-5	7.56455E-5	1.75790E-3

Date of computation: 2026-10-16 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

25.804

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

18 - 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

[-]

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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

0.7

Unit

Source

[1]

Normalized RMS of residuals

Value

0.514338

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-10-12.519282

Unit

Source

[2]

Last Observation

Value

2026-10-15.921319

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

67 (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

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 2026TM77 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	1952-08-15 19:20	> 1 mo	0.1351238	0.0860814	1.3517901
EARTH	1969-10-30 04:49	> 1 mo	0.1815519	0.0128155	2.0453908
EARTH	2006-10-10 19:21	> 1 w	0.0227878	0.0107201	0.1146135
EARTH	2026-10-11 06:02	< 1 min	0.0250279	0.0249734	0.0000182
EARTH	2049-08-08 11:36	> 1 w	0.1874757	0.0963161	0.1496334
EARTH	2069-10-11 21:58	> 1 mo	0.0213128	0.0060735	0.2014048
EARTH	2092-11-01 00:12	> 1 mo	0.1957460	0.0170469	4.6955802
EARTH	2118-08-26 11:55	> 1 mo	0.1082653	0.0693830	4.4201651

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
9.16399123	270.45460134	0.01288988	MINIMUM
358.25511643	71.55684220	1.98952776	SADDLE
179.26546754	73.02463455	2.04918317	SADDLE
179.64469990	253.23728074	4.04506062	MAXIMUM

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MOID Plots

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