Asteroids

2026RD help

Last update: 2026-09-24 12:45 UTC

Orbital Properties

Epoch

61400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.802

Aphelion (Q)

1.225

Eccentricity (e)

0.208

Inclination (i)

2.5

deg

Orbit period (P)

372.7

Earth MOID

0.00582

U parameter

6.4

Next Earth close approach

Date

2027-08-19

Nominal distance (from Earth center)

0.12486

18679268

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.6

mag

Diameter

5 - 11*

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

61400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.013467

1-sigma variation

0.000055

Unit

Eccentricity (e)

Value

0.208317

1-sigma variation

0.000284

Unit

Inclination (i)

Value

2.5139

1-sigma variation

0.0048

Unit

Long. of Ascending Node (Ω)

Value

156.5776

1-sigma variation

0.0029

Unit

Arg. of Perihelion (ω)

Value

287.9535

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

29.52279

1-sigma variation

0.02056

Unit

Perihelion distance

Value

0.802345

1-sigma variation

Unit

Aphelion distance

Value

1.224589

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.078551

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.027587

1-sigma variation

Unit

MOID

Value

0.005819

1-sigma variation

Unit

Orbit Period

Value

372.6601

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.05674E-9	1.56366E-8	2.66188E-7	1.59458E-7	2.60117E-8	1.13521E-6
e	1.56366E-8	8.04670E-8	1.37350E-6	8.24195E-7	1.56590E-7	5.82963E-6
i	2.66188E-7	1.37350E-6	2.34782E-5	1.41018E-5	2.84274E-6	9.94113E-5
Ω	1.59458E-7	8.24195E-7	1.41018E-5	8.47573E-6	1.76927E-6	5.96175E-5
ω	2.60117E-8	1.56590E-7	2.84274E-6	1.76927E-6	1.38225E-6	1.07685E-5
M	1.13521E-6	5.82963E-6	9.94113E-5	5.96175E-5	1.07685E-5	4.22653E-4

Date of computation: 2026-09-24 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

28.594

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 - 11*

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

0.72223

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

18 (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	1955-08-31 13:03	> 1 w	0.1422635	0.0035508	0.1998757
EARTH	1956-09-05 13:54	> 1 d	0.0074470	0.0041080	0.0510222
EARTH	1957-09-06 17:52	> 1 d	0.0613432	0.0062332	0.0577791
EARTH	1958-08-15 09:10	> 1 w	0.1281667	0.0375423	0.0338526
EARTH	1958-10-11 24:00	> 1 mo	0.1324904	0.0375530	0.0323120
EARTH	1959-07-24 20:35	> 1 w	0.1703033	0.1278935	0.0147347
EARTH	1959-11-08 16:00	> 1 w	0.1681099	0.1321349	0.0120182
EARTH	1960-07-07 03:59	> 1 w	0.1949514	0.1809278	0.0048999
EARTH	1960-11-27 19:19	> 1 w	0.1850495	0.1726383	0.0041387
EARTH	1961-12-16 03:48	> 1 d	0.1893225	0.1853880	0.0013151
EARTH	1963-01-03 10:48	> 1 d	0.1822241	0.1755370	0.0022677
EARTH	1963-05-23 20:35	> 1 d	0.1956914	0.1922679	0.0011684
EARTH	1964-01-23 15:26	> 1 w	0.1623817	0.1401361	0.0076796
EARTH	1964-05-05 15:18	> 1 w	0.1709965	0.1469428	0.0080352
EARTH	1965-02-18 12:36	> 1 w	0.1239094	0.0640176	0.0222814
EARTH	1965-04-10 08:06	> 1 w	0.1266480	0.0525913	0.0246965
EARTH	1966-03-20 13:46	> 1 d	0.0562415	0.0203767	0.0410928
EARTH	1967-03-24 07:08	> 1 d	0.0273660	0.0202028	0.0347898
EARTH	1968-03-27 16:32	> 1 d	0.1085283	0.0207725	0.0538477
EARTH	1969-04-01 08:11	> 1 d	0.1995274	0.0399453	0.0546100
EARTH	2024-08-30 05:16	65.4	0.1699802	0.1662506	0.0012432
EARTH	2025-09-03 09:16	39.4	0.0796317	0.0776576	0.0006581
EARTH	2026-09-06 18:39	< 1 min	0.0069778	0.0069455	0.0000108
EARTH	2027-08-19 05:00	225.9	0.1248632	0.1235354	0.0004426
EARTH	2027-10-10 14:03	379.9	0.1272785	0.1260220	0.0004189
EARTH	2028-07-15 01:20	436.2	0.1893901	0.1878835	0.0005022
EARTH	2028-11-20 19:09	748.6	0.1770506	0.1759412	0.0003698
EARTH	2029-12-21 11:44	1061.9	0.1842041	0.1836482	0.0001854
EARTH	2031-01-22 12:32	> 1 d	0.1587496	0.1579899	0.0002538
EARTH	2031-05-02 02:56	1129.1	0.1699185	0.1688854	0.0003444
EARTH	2032-03-16 10:32	157.1	0.0750278	0.0706432	0.0014656
EARTH	2033-03-23 10:28	146.3	0.0525721	0.0472984	0.0017698
EARTH	2034-03-29 21:35	110.2	0.1816884	0.1763345	0.0017848
EARTH	2073-08-30 22:23	129.8	0.1572854	0.1514982	0.0019291
EARTH	2074-09-05 20:47	145.7	0.0247505	0.0191831	0.0018736
EARTH	2075-09-05 14:16	77.6	0.0865349	0.0861532	0.0001273
EARTH	2076-07-27 16:30	1129.4	0.1675127	0.1646958	0.0009395
EARTH	2076-11-05 22:10	> 1 d	0.1633425	0.1614454	0.0006324
EARTH	2077-12-05 15:28	> 1 d	0.1856301	0.1845714	0.0003530
EARTH	2079-01-01 12:34	> 1 d	0.1807972	0.1787684	0.0006783
EARTH	2079-05-22 10:31	> 1 d	0.1984528	0.1958368	0.0008723
EARTH	2080-02-01 11:18	> 1 d	0.1477000	0.1387020	0.0030178
EARTH	2080-04-24 19:51	> 1 d	0.1553770	0.1447121	0.0035551
EARTH	2081-03-18 22:23	532.2	0.0604440	0.0374196	0.0079580
EARTH	2082-03-24 14:14	467.6	0.0528672	0.0292258	0.0084490
EARTH	2083-03-30 09:09	315.6	0.1674970	0.1439653	0.0078530
EARTH	2126-08-30 17:29	> 1 d	0.1919844	0.0517496	0.0468059

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
271.52729412	241.83769709	0.00581909	MINIMUM
84.08945922	76.84334469	0.01818147	MINIMUM
357.39673793	338.77742949	0.18567408	SADDLE
178.11969811	159.80893216	0.21561275	SADDLE
358.04257241	159.57300452	1.81601952	SADDLE
178.91773410	340.47098158	2.20826155	MAXIMUM

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MOID Plots

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