Asteroids

2026RD49 help

Last update: 2026-09-16 23:15 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.040

Aphelion (Q)

1.864

Eccentricity (e)

0.284

Inclination (i)

2.6

deg

Orbit period (P)

639.1

Earth MOID

0.03998

U parameter

7.6

Next Earth close approach

Date

2026-09-22

Nominal distance (from Earth center)

0.04043

6047658

Maximum Brightness

20.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-15

Observatory

Pan-STARRS 1, Haleakala

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

1.452015

1-sigma variation

0.000786

Unit

Eccentricity (e)

Value

0.283907

1-sigma variation

0.000361

Unit

Inclination (i)

Value

2.6067

1-sigma variation

0.0026

Unit

Long. of Ascending Node (Ω)

Value

161.0242

1-sigma variation

0.0029

Unit

Arg. of Perihelion (ω)

Value

205.3948

1-sigma variation

0.0114

Unit

Mean Anomaly (M)

Value

296.65144

1-sigma variation

0.05246

Unit

Perihelion distance

Value

1.039778

1-sigma variation

Unit

Aphelion distance

Value

1.864252

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.804779

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.053292

1-sigma variation

Unit

MOID

Value

0.039985

1-sigma variation

Unit

Orbit Period

Value

639.0799

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.17066E-7	2.83276E-7	1.96800E-6	-1.50077E-6	7.84587E-7	4.10382E-5
e	2.83276E-7	1.30118E-7	8.97615E-7	-7.06840E-7	4.57276E-7	1.87980E-5
i	1.96800E-6	8.97615E-7	6.75079E-6	-3.32023E-6	-5.21964E-6	1.34151E-4
Ω	-1.50077E-6	-7.06840E-7	-3.32023E-6	8.21377E-6	-2.57012E-5	-8.97608E-5
ω	7.84587E-7	4.57276E-7	-5.21964E-6	-2.57012E-5	1.29291E-4	-2.42906E-6
M	4.10382E-5	1.87980E-5	1.34151E-4	-8.97608E-5	-2.42906E-6	2.75254E-3

Date of computation: 2026-09-16 23:15 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

26.458

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

14 - 30*

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

0.5

Unit

Source

[1]

Normalized RMS of residuals

Value

0.70181

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-14.295214

Unit

Source

[2]

Last Observation

Value

2026-09-16.934917

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

14 (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 2026RD49 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	1951-09-09 11:27	> 1 w	0.0557209	0.0252626	0.0574026
EARTH	1958-08-23 03:00	> 1 w	0.1751960	0.0061870	0.1556065
EARTH	2005-10-26 00:52	> 1 w	0.1883494	0.0261364	0.2617704
EARTH	2012-10-07 11:43	> 1 mo	0.0640672	0.0038573	0.1412507
EARTH	2019-09-25 08:16	> 1 w	0.0415472	0.0360436	0.0068278
EARTH	2026-09-22 09:30	9.1	0.0404261	0.0402928	0.0000444
EARTH	2033-09-19 18:56	> 1 w	0.0406778	0.0391955	0.0042509
EARTH	2040-09-07 23:21	> 1 mo	0.0638975	0.0229563	0.1522763
EARTH	2047-08-23 12:48	> 1 w	0.1932680	0.0065500	0.2346245
EARTH	2094-10-26 14:20	> 1 d	0.1688258	0.0926130	0.0256665
EARTH	2101-10-08 16:25	> 1 d	0.0589739	0.0219552	0.0123783
EARTH	2108-09-28 06:21	> 1 w	0.0427469	0.0321426	0.0155204
EARTH	2115-10-03 17:39	> 1 mo	0.0477754	0.0139837	0.1399411
EARTH	2122-10-23 03:00	> 1 mo	0.1204903	0.0224537	0.9728875

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
353.97601667	254.82369455	0.03998499	MINIMUM
178.47259433	80.34619127	0.86715871	SADDLE
357.03379226	78.91977348	2.03697319	SADDLE
178.23898961	260.16921735	2.86676070	MAXIMUM

Download:

MOID Plots

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