Asteroids

416151 2002RQ25 help

Last update: 2025-09-20 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.771

Aphelion (Q)

1.452

Eccentricity (e)

0.306

Inclination (i)

4.6

deg

Orbit period (P)

428.1

Earth MOID

0.05036

U parameter

0.0

A₂

59.4

10^-15au/days²

Next Earth close approach

Date

2043-08-18

Nominal distance (from Earth center)

0.09457

14146855

Maximum Brightness

18.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.7

mag

Diameter

190 - 400*

Taxonomic type

Rotation period (T)

12.19

Discovery Information

Discovery Date

2002-09-03

Observatory

Campo Imperatore-CINEOS

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

1.111703

1-sigma variation

3.570E-9

Unit

Eccentricity (e)

Value

0.306262

1-sigma variation

2.449E-8

Unit

Inclination (i)

Value

4.5746

1-sigma variation

2.074E-6

Unit

Long. of Ascending Node (Ω)

Value

10.4519

1-sigma variation

2.262E-5

Unit

Arg. of Perihelion (ω)

Value

225.7629

1-sigma variation

2.231E-5

Unit

Mean Anomaly (M)

Value

10.69676

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.771231

1-sigma variation

Unit

Aphelion distance

Value

1.452176

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.280262

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.170179

1-sigma variation

Unit

MOID

Value

0.050360

1-sigma variation

Unit

Orbit Period

Value

428.1361

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

59.41034

1-sigma variation

8.47468

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.27430E-17	3.66447E-17	7.79772E-16	-1.22309E-14	2.02979E-14	-3.29785E-14	2.97338E-8
e	3.66447E-17	5.99757E-16	7.86759E-15	-2.93399E-14	8.96866E-14	-7.52821E-14	9.71692E-8
i	7.79772E-16	7.86759E-15	4.30287E-12	-4.61679E-11	4.48392E-11	1.16250E-12	2.01454E-6
Ω	-1.22309E-14	-2.93399E-14	-4.61679E-11	5.11789E-10	-4.98810E-10	-9.55916E-13	-2.95777E-5
ω	2.02979E-14	8.96866E-14	4.48392E-11	-4.98810E-10	4.97717E-10	-1.93172E-11	4.97752E-5
M	-3.29785E-14	-7.52821E-14	1.16250E-12	-9.55916E-13	-1.93172E-11	9.33246E-11	-7.31325E-5
A₂	2.97338E-8	9.71692E-8	2.01454E-6	-2.95777E-5	4.97752E-5	-7.31325E-5	7.18202E1

Date of computation: 2025-09-20 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

12.19

Unit

Source

[5]

Quality

Value

Unit

Source

[5]

Amplitude

Value

0.72

Unit

mag

Source

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

C/X

Unit

Source

[1]

[2]

[3]

Taxonomy (all)

Value

C/X

Unit

Source

[4]

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.686

Unit

mag

Source

[6]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[7]

Diameter

Value

190 - 400*

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[8]

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	1.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) Warner, B.D. (2015) MPB 42, 172-183. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JANUARY - MARCH)(35NEAs)
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	Estimation	Estimated from absolute magnitude
[8]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7391

Unit

Source

[1]

Unobserved

Value

1041

Unit

Source

[1]

Normalized RMS of residuals

Value

0.631072

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-09-03.98943

Unit

Source

[2]

Last Observation

Value

2022-11-29.172519

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

326 (12)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-02-18

Unit

Source

[3]

Last Observation

Value

2015-02-23

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (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 416151 2002RQ25 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	1954-02-25 08:21	< 1 min	0.0758970	0.0758856	0.0000038
EARTH	1975-08-14 18:49	< 1 min	0.1236093	0.1236042	0.0000017
EARTH	1981-02-18 10:59	< 1 min	0.0584424	0.0584402	0.0000007
EARTH	1982-08-27 22:17	< 1 min	0.1460376	0.1460340	0.0000012
EARTH	1988-03-30 20:59	< 1 min	0.1826025	0.1826008	0.0000006
EARTH	2009-08-18 19:47	< 1 s	0.0773932	0.0773930	0.0000000
EARTH	2015-02-20 09:19	< 1 s	0.0513723	0.0513723	0.0000000
EARTH	2016-08-28 07:11	< 1 s	0.1577446	0.1577443	0.0000001
EARTH	2022-03-29 13:21	< 1 min	0.1784077	0.1784075	0.0000001
EARTH	2043-08-18 04:03	< 1 min	0.0945659	0.0945636	0.0000008
EARTH	2049-02-18 13:09	< 1 min	0.0607996	0.0607974	0.0000007
EARTH	2050-08-27 17:51	< 1 min	0.1281079	0.1281042	0.0000012
EARTH	2056-03-10 03:48	< 1 min	0.1321818	0.1321776	0.0000014
EARTH	2084-08-19 12:44	< 1 min	0.0733217	0.0733186	0.0000010
EARTH	2090-02-18 15:13	< 1 min	0.0640751	0.0640725	0.0000009
EARTH	2091-08-27 22:17	< 1 min	0.1192405	0.1192371	0.0000011
EARTH	2097-03-06 08:58	< 1 min	0.1183029	0.1183006	0.0000008
EARTH	2125-08-14 21:36	< 1 min	0.1367814	0.1367804	0.0000004

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
293.01446670	49.75021259	0.05035979	MINIMUM
74.55123812	228.21900613	0.05471716	MINIMUM
4.92735830	140.75794120	0.24821634	SADDLE
182.61442226	317.18723844	0.46904732	SADDLE
2.95609949	318.02877233	1.75871158	SADDLE
181.25431521	136.21583024	2.46431793	MAXIMUM

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MOID Plots

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