Asteroids

2015FS33 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.472

Aphelion (Q)

2.068

Eccentricity (e)

0.628

Inclination (i)

13.3

deg

Orbit period (P)

522.9

Earth MOID

0.02198

U parameter

0.0

Next Earth close approach

Date

2035-04-17

Nominal distance (from Earth center)

0.16437

24589978

Maximum Brightness

21.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.6

mag

Diameter

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-03-17

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.270216

1-sigma variation

1.695E-9

Unit

Eccentricity (e)

Value

0.628139

1-sigma variation

4.059E-7

Unit

Inclination (i)

Value

13.3043

1-sigma variation

2.440E-5

Unit

Long. of Ascending Node (Ω)

Value

15.7318

1-sigma variation

6.854E-6

Unit

Arg. of Perihelion (ω)

Value

297.3879

1-sigma variation

4.836E-5

Unit

Mean Anomaly (M)

Value

253.90608

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.472344

1-sigma variation

Unit

Aphelion distance

Value

2.068088

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.402929

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.081468

1-sigma variation

Unit

MOID

Value

0.021976

1-sigma variation

Unit

Orbit Period

Value

522.8952

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.87296E-18	-2.86422E-16	-2.36645E-14	4.93465E-15	-3.88480E-14	-7.33923E-15
e	-2.86422E-16	1.64733E-13	6.30000E-12	-6.34465E-13	1.93511E-11	4.48279E-12
i	-2.36645E-14	6.30000E-12	5.95129E-10	-6.37307E-11	8.01868E-10	1.47635E-10
Ω	4.93465E-15	-6.34465E-13	-6.37307E-11	4.69780E-11	-1.23181E-10	-1.10537E-11
ω	-3.88480E-14	1.93511E-11	8.01868E-10	-1.23181E-10	2.33862E-9	5.09425E-10
M	-7.33923E-15	4.48279E-12	1.47635E-10	-1.10537E-11	5.09425E-10	1.34095E-10

Date of computation: 2026-03-17 23:26 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

22.606

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.896

Unit

Source

[2]

Diameter

Value

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]	EARN	1.) Masiero, J.R. et al. (2018) Astron. J. 156_60(8pp) (Small and Nearby NEOs Observed by NEOWISE During the First Three Years of Survey: Physical Properties)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

3679

Unit

Source

[1]

Unobserved

Value

344

Unit

Source

[1]

Normalized RMS of residuals

Value

0.615917

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-03-17.56011

Unit

Source

[2]

Last Observation

Value

2025-04-13.002201

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

115 (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

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

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 2015FS33 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	1952-04-11 01:54	< 1 min	0.0296512	0.0296498	0.0000004
EARTH	1962-04-16 00:12	< 1 min	0.1384149	0.1384136	0.0000004
EARTH	1976-11-20 10:38	< 1 min	0.1609318	0.1609299	0.0000006
EARTH	1986-11-27 06:23	< 1 min	0.1936159	0.1936134	0.0000008
EARTH	2005-04-03 00:35	< 1 s	0.1838915	0.1838909	0.0000002
EARTH	2015-04-08 19:56	< 1 s	0.0626323	0.0626320	0.0000001
EARTH	2025-04-12 01:13	< 1 s	0.0375013	0.0375010	0.0000001
EARTH	2035-04-17 14:21	< 1 s	0.1643738	0.1643735	0.0000001
EARTH	2039-11-16 09:23	< 1 min	0.1907408	0.1907363	0.0000015
EARTH	2049-11-23 21:03	< 1 min	0.1678222	0.1678215	0.0000002
EARTH	2078-04-07 11:22	< 1 min	0.0988017	0.0988003	0.0000005
EARTH	2088-04-12 09:55	< 1 min	0.0432994	0.0432981	0.0000004
EARTH	2098-04-18 13:10	< 1 min	0.1907183	0.1907169	0.0000005
EARTH	2102-11-19 08:50	< 1 min	0.1785288	0.1785246	0.0000014
EARTH	2112-11-27 16:16	< 1 min	0.1889637	0.1889611	0.0000009

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
289.10235418	98.45424404	0.02145142	MINIMUM
65.54169394	318.53779031	0.16221263	MINIMUM
356.35383053	205.62658018	0.56301698	SADDLE
178.33426757	31.38366457	1.12131805	SADDLE
357.79314103	28.76639495	1.45143581	SADDLE
180.19629882	212.27393227	3.06911663	MAXIMUM

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MOID Plots

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