Asteroids

2026RD help

Last update: 2026-09-05 12:45 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.799

Aphelion (Q)

1.219

Eccentricity (e)

0.208

Inclination (i)

2.7

deg

Orbit period (P)

370.2

Earth MOID

0.00539

U parameter

6.7

Next Earth close approach

Date

2026-09-06

Nominal distance (from Earth center)

0.00698

1043760

Maximum Brightness

19.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.6

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2026-09-02

Observatory

University of Arizona 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

1.008989

1-sigma variation

0.000076

Unit

Eccentricity (e)

Value

0.207869

1-sigma variation

0.000305

Unit

Inclination (i)

Value

2.7101

1-sigma variation

0.0045

Unit

Long. of Ascending Node (Ω)

Value

157.2662

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

288.5337

1-sigma variation

0.0028

Unit

Mean Anomaly (M)

Value

194.37740

1-sigma variation

0.04804

Unit

Perihelion distance

Value

0.799251

1-sigma variation

Unit

Aphelion distance

Value

1.218726

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.084327

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.023564

1-sigma variation

Unit

MOID

Value

0.005386

1-sigma variation

Unit

Orbit Period

Value

370.1927

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.83481E-9	2.32375E-8	3.42419E-7	-9.03859E-9	-2.02174E-7	3.66923E-6
e	2.32375E-8	9.28403E-8	1.37101E-6	-3.43057E-8	-7.88439E-7	1.46281E-5
i	3.42419E-7	1.37101E-6	2.02817E-5	-4.84323E-7	-1.14535E-5	2.15704E-4
Ω	-9.03859E-9	-3.43057E-8	-4.84323E-7	2.72426E-8	4.06371E-7	-5.59805E-6
ω	-2.02174E-7	-7.88439E-7	-1.14535E-5	4.06371E-7	7.95409E-6	-1.26276E-4
M	3.66923E-6	1.46281E-5	2.15704E-4	-5.59805E-6	-1.26276E-4	2.30818E-3

Date of computation: 2026-09-05 12:45 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

28.554

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

5 - 12*

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

0.7

Unit

Source

[1]

Normalized RMS of residuals

Value

0.747738

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2026-09-02.241365

Unit

Source

[2]

Last Observation

Value

2026-09-05.096971

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

16 (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 2026RD 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	1955-09-01 06:22	> 1 w	0.1286176	0.0041808	0.2492051
EARTH	1956-09-05 11:22	> 1 d	0.0112968	0.0041749	0.0911478
EARTH	1957-09-06 21:36	> 1 d	0.0571052	0.0055839	0.0987604
EARTH	1958-08-16 17:23	> 1 mo	0.1255612	0.0276302	0.0626458
EARTH	1958-10-10 01:05	> 1 mo	0.1299851	0.0158372	0.0607256
EARTH	1959-07-25 14:15	> 1 mo	0.1691097	0.0879593	0.0293465
EARTH	1959-11-07 21:55	> 1 mo	0.1671485	0.0968695	0.0235205
EARTH	1960-07-07 15:29	> 1 mo	0.1945054	0.1618296	0.0115046
EARTH	1960-11-27 08:54	> 1 mo	0.1847087	0.1594272	0.0084292
EARTH	1961-12-15 22:23	> 1 w	0.1892508	0.1852237	0.0013563
EARTH	1963-01-03 09:53	> 1 w	0.1821763	0.1810814	0.0003664
EARTH	1963-05-23 20:58	> 1 d	0.1957483	0.1865462	0.0031101
EARTH	1964-01-23 19:51	> 1 d	0.1620887	0.1518217	0.0034772
EARTH	1964-05-05 11:02	> 1 d	0.1707198	0.1630595	0.0025713
EARTH	1965-02-19 05:24	> 1 w	0.1228485	0.0734713	0.0176635
EARTH	1965-04-09 14:31	> 1 w	0.1254816	0.0677730	0.0192408
EARTH	1966-03-20 16:42	> 1 d	0.0541008	0.0203435	0.0391771
EARTH	1967-03-24 10:25	> 1 d	0.0293648	0.0202103	0.0399607
EARTH	1968-03-27 19:56	> 1 d	0.1115018	0.0207937	0.0573501
EARTH	2024-08-30 05:21	70.0	0.1699115	0.1659214	0.0013300
EARTH	2025-09-03 09:18	42.2	0.0795953	0.0774832	0.0007041
EARTH	2026-09-06 18:39	< 1 min	0.0069771	0.0069430	0.0000114
EARTH	2027-08-19 05:09	243.8	0.1248391	0.1234161	0.0004744
EARTH	2027-10-10 13:48	409.3	0.1272555	0.1259099	0.0004486
EARTH	2028-07-15 01:29	471.2	0.1893622	0.1877507	0.0005372
EARTH	2028-11-20 18:55	806.3	0.1770297	0.1758457	0.0003947
EARTH	2029-12-21 11:26	1143.9	0.1841927	0.1836056	0.0001958
EARTH	2031-01-22 12:03	> 1 d	0.1587607	0.1579315	0.0002771
EARTH	2031-05-02 03:20	1219.1	0.1699340	0.1688088	0.0003751
EARTH	2032-03-16 10:20	169.2	0.0751020	0.0703683	0.0015825
EARTH	2033-03-23 10:20	157.0	0.0524807	0.0468025	0.0019067
EARTH	2034-03-29 21:27	118.0	0.1815951	0.1758354	0.0019201
EARTH	2073-08-30 22:28	145.6	0.1572303	0.1506723	0.0021861
EARTH	2074-09-05 20:52	162.9	0.0246955	0.0184067	0.0021201
EARTH	2075-09-05 14:12	85.9	0.0865392	0.0861361	0.0001344
EARTH	2076-07-27 16:41	1302.9	0.1674822	0.1642850	0.0010664
EARTH	2076-11-05 21:58	> 1 d	0.1633194	0.1611804	0.0007131
EARTH	2077-12-05 15:03	> 1 d	0.1856121	0.1844595	0.0003843
EARTH	2079-01-01 11:53	> 1 d	0.1808038	0.1784475	0.0007882
EARTH	2079-05-22 11:14	> 1 d	0.1984628	0.1954262	0.0010126
EARTH	2080-02-01 10:03	> 1 d	0.1477671	0.1374509	0.0034632
EARTH	2080-04-24 21:07	> 1 d	0.1554569	0.1432210	0.0040788
EARTH	2081-03-18 22:07	609.6	0.0606403	0.0344960	0.0091170
EARTH	2082-03-24 14:01	534.6	0.0526500	0.0262347	0.0096588
EARTH	2083-03-30 08:58	359.6	0.1672888	0.1404393	0.0089621
EARTH	2126-08-30 18:36	> 1 d	0.1910700	0.0285721	0.0543175

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
269.79622905	240.01412709	0.00538555	MINIMUM
85.33883753	77.82935876	0.02105517	MINIMUM
357.12678321	338.30158065	0.18955204	SADDLE
177.86621167	159.40707023	0.20894848	SADDLE
357.88362732	159.23214153	1.81465646	SADDLE
178.84787750	340.22171364	2.20259402	MAXIMUM

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MOID Plots

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