Asteroids

2021RN14 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.720

Aphelion (Q)

1.785

Eccentricity (e)

0.425

Inclination (i)

2.7

deg

Orbit period (P)

511.9

Earth MOID

0.00473

U parameter

7.9

Next Earth close approach

Date

2028-09-22

Nominal distance (from Earth center)

0.04182

6255465

Maximum Brightness

23.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-09-13

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

1.252391

1-sigma variation

0.000678

Unit

Eccentricity (e)

Value

0.425465

1-sigma variation

0.000492

Unit

Inclination (i)

Value

2.7175

1-sigma variation

0.0025

Unit

Long. of Ascending Node (Ω)

Value

2.6209

1-sigma variation

0.0017

Unit

Arg. of Perihelion (ω)

Value

81.4350

1-sigma variation

0.0045

Unit

Mean Anomaly (M)

Value

91.20266

1-sigma variation

0.95116

Unit

Perihelion distance

Value

0.719543

1-sigma variation

Unit

Aphelion distance

Value

1.785240

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.038434

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.098160

1-sigma variation

Unit

MOID

Value

0.004734

1-sigma variation

Unit

Orbit Period

Value

511.9275

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.59749E-7	3.33284E-7	1.69706E-6	1.10678E-6	-3.05655E-6	-6.44934E-4
e	3.33284E-7	2.41609E-7	1.23037E-6	8.01782E-7	-2.21502E-6	-4.67530E-4
i	1.69706E-6	1.23037E-6	6.27409E-6	4.04080E-6	-1.12240E-5	-2.38063E-3
Ω	1.10678E-6	8.01782E-7	4.04080E-6	2.86920E-6	-7.62620E-6	-1.55259E-3
ω	-3.05655E-6	-2.21502E-6	-1.12240E-5	-7.62620E-6	2.06769E-5	4.28773E-3
M	-6.44934E-4	-4.67530E-4	-2.38063E-3	-1.55259E-3	4.28773E-3	9.04710E-1

Date of computation: 2026-07-30 14:25 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

26.843

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

11 - 25*

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

1781

Unit

Source

[1]

Normalized RMS of residuals

Value

0.407074

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-09-13.27429

Unit

Source

[2]

Last Observation

Value

2021-09-18.586955

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

36 (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 2021RN14 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	1967-02-09 01:51	> 1 w	0.1828625	0.0432255	0.0465460
MARS	1967-05-30 07:29	77.3	0.0499625	0.0499249	0.0015933
EARTH	1974-03-04 19:41	> 1 d	0.0698750	0.0106522	0.0390927
EARTH	1981-03-11 23:45	1019.7	0.0391311	0.0111007	0.0120560
EARTH	1983-09-10 20:22	> 1 d	0.1659171	0.0855405	0.0268069
VENUS	1983-11-21 03:15	> 1 d	0.0397943	0.0146237	0.0237612
EARTH	1990-09-25 12:35	> 1 d	0.0698394	0.0199880	0.0167295
EARTH	2012-03-06 08:54	> 1 d	0.0472667	0.0105711	0.0426058
EARTH	2019-03-20 13:39	997.8	0.1849935	0.1391495	0.0152883
EARTH	2021-09-19 23:11	< 1 min	0.0049169	0.0048995	0.0000058
EARTH	2028-09-22 18:17	> 1 d	0.0418152	0.0048471	0.0351963
EARTH	2035-10-04 13:32	> 1 d	0.1339062	0.0713200	0.0209027
MARS	2041-03-11 11:18	77.9	0.0254491	0.0076595	0.0060378
VENUS	2052-10-16 20:58	> 1 d	0.0477448	0.0150074	0.0266408
EARTH	2064-02-21 22:29	816.3	0.1491653	0.1388289	0.0034470
EARTH	2071-03-15 22:06	1372.3	0.0858184	0.0417400	0.0148259
EARTH	2073-09-15 22:37	> 1 d	0.0787588	0.0143744	0.0215965
EARTH	2080-10-11 01:48	> 1 d	0.1589889	0.1040055	0.0183634
EARTH	2102-03-07 11:56	524.6	0.0633775	0.0583372	0.0016801
EARTH	2109-03-19 03:54	238.9	0.1291725	0.1064941	0.0075613
EARTH	2111-09-18 05:40	564.0	0.0682675	0.0447333	0.0078545
EARTH	2118-09-28 07:53	1258.7	0.0787950	0.0503897	0.0094747

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
297.74089277	253.43078606	0.00473363	MINIMUM
61.01308438	64.52785424	0.01050293	MINIMUM
359.15880857	338.79125859	0.26795135	SADDLE
179.64564964	159.22614904	0.77206384	SADDLE
358.97679693	158.52506259	1.73481198	SADDLE
179.58699615	339.19452341	2.76909493	MAXIMUM

Download:

MOID Plots

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