Asteroids

2021RK14 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.830

Aphelion (Q)

1.291

Eccentricity (e)

0.217

Inclination (i)

11.8

deg

Orbit period (P)

398.9

Earth MOID

0.00110

U parameter

4.3

Next Earth close approach

Date

2032-04-03

Nominal distance (from Earth center)

0.19401

29024110

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.6

mag

Diameter

50 - 110*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-09-13

Observatory

Catalina Sky 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.060540

1-sigma variation

0.000003

Unit

Eccentricity (e)

Value

0.217076

1-sigma variation

0.000004

Unit

Inclination (i)

Value

11.7741

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

173.1677

1-sigma variation

2.228E-5

Unit

Arg. of Perihelion (ω)

Value

85.4732

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

8.82409

1-sigma variation

0.00567

Unit

Perihelion distance

Value

0.830322

1-sigma variation

Unit

Aphelion distance

Value

1.290758

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001652

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.022211

1-sigma variation

Unit

MOID

Value

0.001103

1-sigma variation

Unit

Orbit Period

Value

398.9230

1-sigma variation

Unit

U parameter

Value

4.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.67691E-12	9.53476E-12	4.78283E-10	5.72140E-11	4.69739E-10	-1.46514E-8
e	9.53476E-12	1.36622E-11	6.85718E-10	8.20941E-11	6.64241E-10	-2.09214E-8
i	4.78283E-10	6.85718E-10	3.44467E-8	4.12644E-9	3.32378E-8	-1.04942E-6
Ω	5.72140E-11	8.20941E-11	4.12644E-9	4.96254E-10	3.96163E-9	-1.25531E-7
ω	4.69739E-10	6.64241E-10	3.32378E-8	3.96163E-9	3.40235E-8	-1.03097E-6
M	-1.46514E-8	-2.09214E-8	-1.04942E-6	-1.25531E-7	-1.03097E-6	3.21502E-5

Date of computation: 2025-09-10 00:30 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

23.6

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

50 - 110*

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

1411

Unit

Source

[1]

Normalized RMS of residuals

Value

0.563729

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-09-08.40751

Unit

Source

[2]

Last Observation

Value

2021-11-07.358013

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

101 (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

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2021RK14 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1950-03-16 10:55	13.9	0.0457146	0.0451291	0.0001952
EARTH	1951-09-11 02:37	7.7	0.0751404	0.0745323	0.0002028
EARTH	1963-09-16 22:21	16.3	0.0949203	0.0940599	0.0002868
EARTH	1973-03-07 10:38	11.2	0.1513110	0.1506919	0.0002064
EARTH	1985-03-16 16:18	< 1 min	0.0545347	0.0545231	0.0000038
EARTH	1986-09-11 05:31	< 1 min	0.0595232	0.0594284	0.0000316
EARTH	1998-09-19 06:20	9.1	0.1620872	0.1614716	0.0002052
EARTH	2008-03-10 16:43	16.7	0.0695225	0.0686934	0.0002763
EARTH	2009-09-14 05:57	32.3	0.1921854	0.1914268	0.0002529
EARTH	2020-03-18 14:06	1.2	0.0969055	0.0968499	0.0000185
EARTH	2021-09-12 02:08	< 1 s	0.0297273	0.0297260	0.0000004
EARTH	2032-04-03 22:55	57.6	0.1940142	0.1932943	0.0002400
EARTH	2033-09-15 04:06	14.4	0.0620698	0.0612953	0.0002583
EARTH	2055-03-12 09:31	2.6	0.0480743	0.0479017	0.0000576
EARTH	2056-09-11 20:38	< 1 min	0.1817361	0.1817077	0.0000095
EARTH	2067-03-15 15:16	15.9	0.0241176	0.0234385	0.0002264
EARTH	2068-09-09 18:44	4.6	0.0930397	0.0928250	0.0000716
EARTH	2080-09-16 21:41	68.5	0.1150297	0.1108118	0.0014063
EARTH	2090-03-09 05:51	120.1	0.1147722	0.1083095	0.0021542
EARTH	2102-03-19 20:11	133.8	0.0935147	0.0874345	0.0020267
EARTH	2103-09-13 13:33	91.1	0.0279042	0.0234120	0.0015576
EARTH	2115-09-18 07:38	172.9	0.1051112	0.0953797	0.0032467
EARTH	2125-03-06 21:59	328.7	0.1839611	0.1654313	0.0061767

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
286.80983378	69.92941064	0.00057846	MINIMUM
78.79155199	248.67838514	0.01512518	MINIMUM
3.07746495	159.81485453	0.26370818	SADDLE
182.48627988	338.60269428	0.38318414	SADDLE
2.07445341	338.52620490	1.80575965	SADDLE
180.97884702	157.39071792	2.29381735	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out