Asteroids

2015UH52 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.524

Aphelion (Q)

1.182

Eccentricity (e)

0.385

Inclination (i)

4.7

deg

Orbit period (P)

287.7

Earth MOID

0.00068

U parameter

3.3

Next Earth close approach

Date

2026-10-22

Nominal distance (from Earth center)

0.13786

20624182

Maximum Brightness

25.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-10-23

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

0.852899

1-sigma variation

2.733E-7

Unit

Eccentricity (e)

Value

0.385319

1-sigma variation

0.000009

Unit

Inclination (i)

Value

4.7353

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

26.3578

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

225.8182

1-sigma variation

2.174E-5

Unit

Mean Anomaly (M)

Value

27.77345

1-sigma variation

0.00136

Unit

Perihelion distance

Value

0.524260

1-sigma variation

Unit

Aphelion distance

Value

1.181537

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.003324

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.432491

1-sigma variation

Unit

MOID

Value

0.000684

1-sigma variation

Unit

Orbit Period

Value

287.7032

1-sigma variation

Unit

U parameter

Value

3.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.46945E-14	-2.35425E-12	-3.84862E-11	-1.72228E-11	-4.79005E-12	-3.72477E-10
e	-2.35425E-12	7.42256E-11	1.21351E-9	5.43507E-10	1.51161E-10	1.17359E-8
i	-3.84862E-11	1.21351E-9	1.99220E-8	8.99815E-9	2.37671E-9	1.91829E-7
Ω	-1.72228E-11	5.43507E-10	8.99815E-9	4.36815E-9	9.39352E-10	8.54093E-8
ω	-4.79005E-12	1.51161E-10	2.37671E-9	9.39352E-10	4.72451E-10	2.38437E-8
M	-3.72477E-10	1.17359E-8	1.91829E-7	8.54093E-8	2.38437E-8	1.85879E-6

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

25.925

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

17 - 40*

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

1502

Unit

Source

[1]

Unobserved

Value

2114

Unit

Source

[1]

Normalized RMS of residuals

Value

0.55733

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-10-23.45412

Unit

Source

[2]

Last Observation

Value

2019-12-03.513726

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

89 (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

Close Approaches for 2015UH52 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	1951-01-16 18:44	481.1	0.1026756	0.0952170	0.0026821
EARTH	1953-10-21 13:13	159.5	0.1103179	0.0972864	0.0043439
EARTH	1964-10-30 01:07	6.0	0.1236207	0.1234249	0.0000653
EARTH	1969-01-16 11:05	172.2	0.1020814	0.0991214	0.0010144
EARTH	1971-10-22 06:17	92.0	0.1199911	0.1110960	0.0029650
EARTH	1980-01-17 00:06	198.5	0.1703698	0.1573646	0.0043897
EARTH	1982-10-23 09:46	571.0	0.0744051	0.0610869	0.0044398
EARTH	1987-01-07 15:25	1143.6	0.1466108	0.1392778	0.0024783
EARTH	1993-11-21 21:02	853.0	0.1921926	0.1902775	0.0006391
EARTH	1998-01-18 17:52	7.2	0.1014771	0.0997284	0.0005924
EARTH	2000-10-19 21:10	< 1 min	0.0047094	0.0045977	0.0000372
EARTH	2004-11-24 06:08	16.8	0.1992250	0.1992160	0.0000030
EARTH	2009-01-13 13:25	9.3	0.1305944	0.1304896	0.0000350
EARTH	2015-10-20 22:44	< 1 min	0.0159809	0.0159801	0.0000003
EARTH	2024-01-20 22:04	< 1 min	0.0838426	0.0838357	0.0000023
EARTH	2026-10-22 16:44	1.2	0.1378641	0.1377578	0.0000354
VENUS	2028-11-16 23:22	1.8	0.0386193	0.0385750	0.0000148
EARTH	2030-11-14 16:57	8.9	0.1777458	0.1776931	0.0000176
EARTH	2035-01-14 16:50	1.5	0.1247160	0.1247148	0.0000004
VENUS	2040-11-19 10:01	< 1 min	0.0476932	0.0476188	0.0000248
EARTH	2041-10-29 05:59	3.0	0.1189903	0.1189438	0.0000155
EARTH	2045-12-25 03:19	4.9	0.1873968	0.1873601	0.0000122
EARTH	2050-01-17 20:17	1.6	0.1676919	0.1675985	0.0000311
EARTH	2052-10-20 04:19	< 1 min	0.0047583	0.0047178	0.0000135
EARTH	2056-11-06 11:49	139.6	0.1569824	0.1561859	0.0002655
EARTH	2065-01-09 16:18	318.8	0.1509232	0.1488165	0.0007045
VENUS	2065-03-08 20:22	121.9	0.0164046	0.0119454	0.0015063
VENUS	2068-07-25 07:20	108.1	0.0196421	0.0140495	0.0018678
EARTH	2069-01-22 02:49	29.6	0.0817664	0.0808084	0.0003677
EARTH	2073-01-19 04:28	14.1	0.1702037	0.1668214	0.0011306
EARTH	2075-10-24 04:45	4.8	0.1738618	0.1711860	0.0008919
EARTH	2079-10-21 01:05	28.5	0.0415672	0.0404986	0.0003563
VENUS	2082-02-02 12:32	49.3	0.0399445	0.0389377	0.0003357
EARTH	2083-10-23 13:04	5.1	0.0752674	0.0743154	0.0003174
EARTH	2087-11-11 06:39	246.8	0.1721274	0.1708279	0.0004332
EARTH	2095-12-23 06:00	574.9	0.1991155	0.1976478	0.0004900
VENUS	2097-10-18 00:40	267.9	0.0491949	0.0413116	0.0026293
EARTH	2100-01-14 20:23	311.2	0.1369338	0.1338033	0.0010498
EARTH	2104-01-24 00:45	35.3	0.0795611	0.0795542	0.0000122
EARTH	2108-01-21 19:51	50.9	0.1488601	0.1479667	0.0002982
VENUS	2111-04-29 21:16	25.2	0.0063262	0.0062888	0.0000126
EARTH	2114-10-23 07:23	1.6	0.1307262	0.1272134	0.0011710
EARTH	2118-10-22 00:19	17.8	0.0782831	0.0717083	0.0021916
VENUS	2122-09-14 07:30	189.1	0.0131698	0.0043651	0.0030156
EARTH	2122-10-21 07:26	1.7	0.0315736	0.0234001	0.0027245

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
115.71768067	285.41836556	0.00059032	MINIMUM
247.24021139	17.43827031	0.08118854	MINIMUM
183.18333132	332.32442177	0.20644870	SADDLE
2.91537275	153.40500669	0.49213369	SADDLE
2.25655008	332.41196085	1.50923581	SADDLE
180.72439006	150.71620072	2.19471313	MAXIMUM

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MOID Plots

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