Asteroids

501647 2014SD224 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.655

Aphelion (Q)

1.302

Eccentricity (e)

0.331

Inclination (i)

4.6

deg

Orbit period (P)

353.4

Earth MOID

0.01731

U parameter

0.0

Next Earth close approach

Date

2043-08-15

Nominal distance (from Earth center)

0.14596

21834641

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.3

mag

Diameter

90 - 200*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2014-09-22

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.978228

1-sigma variation

3.073E-9

Unit

Eccentricity (e)

Value

0.330873

1-sigma variation

3.970E-8

Unit

Inclination (i)

Value

4.5913

1-sigma variation

2.254E-6

Unit

Long. of Ascending Node (Ω)

Value

286.2361

1-sigma variation

9.174E-6

Unit

Arg. of Perihelion (ω)

Value

277.2274

1-sigma variation

9.899E-6

Unit

Mean Anomaly (M)

Value

313.11480

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.654559

1-sigma variation

Unit

Aphelion distance

Value

1.301897

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.181608

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.074830

1-sigma variation

Unit

MOID

Value

0.017312

1-sigma variation

Unit

Orbit Period

Value

353.3935

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.44590E-18	-1.01511E-16	3.03961E-16	-1.29678E-15	-6.91112E-15	-3.12671E-14
e	-1.01511E-16	1.57613E-15	2.71107E-15	-8.45383E-14	2.02364E-13	3.55159E-13
i	3.03961E-16	2.71107E-15	5.07879E-12	-1.69159E-11	1.62650E-11	-1.07826E-13
Ω	-1.29678E-15	-8.45383E-14	-1.69159E-11	8.41543E-11	-8.65364E-11	2.67725E-13
ω	-6.91112E-15	2.02364E-13	1.62650E-11	-8.65364E-11	9.79885E-11	2.79638E-11
M	-3.12671E-14	3.55159E-13	-1.07826E-13	2.67725E-13	2.79638E-11	1.04636E-10

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

22.332

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

90 - 200*

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

2327

Unit

Source

[1]

Unobserved

Value

1771

Unit

Source

[1]

Normalized RMS of residuals

Value

0.46785

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2014-08-15.19769

Unit

Source

[2]

Last Observation

Value

2020-12-25.07363

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

266 (1)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2020-12-23

Unit

Source

[3]

Last Observation

Value

2020-12-28

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

5 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 501647 2014SD224 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	1956-08-12 13:32	< 1 min	0.0920047	0.0920024	0.0000008
EARTH	1957-08-08 09:35	< 1 min	0.1238102	0.1238075	0.0000009
EARTH	1962-12-26 21:56	< 1 s	0.0623141	0.0623105	0.0000012
EARTH	1963-12-20 22:59	< 1 min	0.1454302	0.1454265	0.0000012
EARTH	1985-08-13 15:28	< 1 s	0.1072126	0.1072125	0.0000000
EARTH	1986-08-08 13:54	< 1 s	0.1124519	0.1124517	0.0000001
EARTH	1991-12-27 01:12	< 1 s	0.0450218	0.0450203	0.0000005
EARTH	1992-12-19 10:30	< 1 min	0.1664377	0.1664360	0.0000006
EARTH	2014-08-11 23:33	< 1 s	0.0630637	0.0630635	0.0000001
EARTH	2015-08-13 12:17	< 1 s	0.1586474	0.1586472	0.0000001
EARTH	2020-12-25 20:19	< 1 s	0.0201906	0.0201906	0.0000000
EARTH	2021-12-18 19:39	< 1 s	0.1919770	0.1919769	0.0000000
EARTH	2043-08-15 22:18	< 1 min	0.1459556	0.1459537	0.0000006
EARTH	2044-08-08 03:23	< 1 s	0.0748203	0.0748187	0.0000005
EARTH	2049-12-26 11:11	< 1 min	0.0999415	0.0999402	0.0000004
EARTH	2050-12-22 07:38	< 1 min	0.1117366	0.1117354	0.0000004
EARTH	2072-08-11 15:03	< 1 min	0.0617178	0.0617167	0.0000004
EARTH	2073-08-13 23:09	< 1 min	0.1633339	0.1633325	0.0000005
EARTH	2077-12-11 17:18	< 1 min	0.1897904	0.1897888	0.0000006
EARTH	2078-12-26 00:48	< 1 min	0.0193171	0.0193160	0.0000004
VENUS	2091-10-20 18:18	< 1 min	0.0262878	0.0262838	0.0000014
VENUS	2098-07-25 16:59	1.2	0.0259273	0.0259160	0.0000038
EARTH	2100-08-14 09:51	< 1 min	0.0925307	0.0924918	0.0000130
EARTH	2101-08-10 09:02	1.1	0.1305827	0.1305329	0.0000166
VENUS	2105-04-29 02:44	6.4	0.0458403	0.0457537	0.0000289
EARTH	2106-12-28 00:25	1.1	0.0245905	0.0245166	0.0000247
EARTH	2107-12-21 01:08	1.7	0.1877453	0.1876525	0.0000309

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
269.70633188	351.80814008	0.01736686	MINIMUM
94.66358864	215.36538755	0.04233818	MINIMUM
181.46995993	283.00604304	0.31859169	SADDLE
3.41086999	104.69249085	0.35485645	SADDLE
3.79603334	285.25244962	1.64936254	SADDLE
182.07553523	103.44088625	2.30345946	MAXIMUM

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MOID Plots

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