2015 HP171

Initial reported observation by Catalina Sky Survey on 2015-04-28.
(Discoverer will be defined when the object is numbered. See this note on how discoverers are determined.)

Orbit

Orbit type: Apollo
Near-Earth Object

Note: WebGL enabled browser required.

A geocentric flyby diagram is available here.

epoch2023-02-25.0
epoch JD2460000.5
perihelion date2022-10-20.43048
perihelion JD2459872.93048
argument of perihelion (°)190.92535
ascending node (°)126.67737
inclination (°)11.73293
eccentricity0.6178277
perihelion distance (AU)0.6901661
Tisserand w.r.t. Jupiter3.8
ΔV w.r.t. Earth (km/sec)7.9
semimajor axis (AU)1.8059028
mean anomaly (°)51.80948
mean daily motion (°/day)0.40612740
aphelion distance (AU)2.922
period (years)2.43
P-vector [x]0.73531136
P-vector [y]-0.60546767
P-vector [z]-0.30450962
Q-vector [x]0.65781392
Q-vector [y]0.74572805
Q-vector [z]0.10569068
absolute magnitude20.09
phase slope0.15
uncertainty0
referenceMPO 733291
observations used111
oppositions3
arc length (days)2797
first opposition used2015
last opposition used2022
residual rms (arc-secs)0.55
perturbers coarse indicatorM-v
perturbers precise indicator003El
first observation date used2015-04-28.0
last observation date used2022-12-24.0
computer nameVeres
JD of orbit computation2457361.404479
perihelion JD uncertainty (days)6.8084E-05
argument of perihelion uncertainty (°)1.2902E-04
ascending node uncertainty (°)1.4927E-04
inclination uncertainty (°)4.3460E-05
eccentricity uncertainty 2.8971E-06
perihelion distance uncertainty (AU)1.4394E-06
 Minimum Orbit Intersection Distances (in AU)
for orbit epoch: 2460000.5, reference: E2022-YH1
Mercury0.27207
Venus0.03584
Earth0.18812
Mars0.27
Jupiter2.40227
Saturn6.27516
Uranus15.5931
Neptune27.489

Observations

118 total observations over interval: 2015 04 28.39826 – 2022 12 24.11481
These data are available for download (format description).

Date (UT) J2000 RA J2000 Dec Magn Location Ref
2015 04 28.39826 15 28 19.80 +32 39 12.1 19.4 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.40619 15 28 19.55 +32 39 43.3 19.4 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.41412 15 28 19.50 +32 40 16.8 19.5 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.42206 15 28 19.28 +32 40 49.3 19.5 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.48268 15 28 18.56 +32 44 58.5 19.0 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.48352 15 28 18.60 +32 45 00.7 19.1 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.48437 15 28 18.54 +32 45 06.5 19.6 V 703 – Catalina Sky Survey MPS 603555
2015 04 28.48522 15 28 18.54 +32 45 08.0 19.6 V 703 – Catalina Sky Survey MPS 603555
2015 04 29.16691 15 28 18.51 +33 32 45.9 19.0 R G48 – Harlingten Research Observatory, Rancho Hildal MPS 603555
2015 04 29.16889 15 28 18.55 +33 32 53.6 19.9 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.16957 15 28 18.46 +33 32 56.9 19.0 R G48 – Harlingten Research Observatory, Rancho Hildal MPS 603555
2015 04 29.17088 15 28 18.49 +33 33 03.1 19.3 R G48 – Harlingten Research Observatory, Rancho Hildal MPS 603555
2015 04 29.17551 15 28 18.46 +33 33 22.5 19.6 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.18164 15 28 18.39 +33 33 49.0 19.6 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.30689 15 28 15.90 +33 42 44.9 19.8 V H21 – Astronomical Research Observatory, Westfield MPS 603555
2015 04 29.31113 15 28 15.84 +33 43 02.6 19.7 V H21 – Astronomical Research Observatory, Westfield MPS 603555
2015 04 29.31536 15 28 15.76 +33 43 20.7 19.7 V H21 – Astronomical Research Observatory, Westfield MPS 603555
2015 04 29.36472 15 28 15.63 +33 46 54.9 19.5 V G96 – Mt. Lemmon Survey MPS 603555
2015 04 29.36628 15 28 15.60 +33 47 02.0 19.5 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.36682 15 28 15.59 +33 47 03.8 19.3 V G96 – Mt. Lemmon Survey MPS 603555
2015 04 29.36892 15 28 15.56 +33 47 12.8 19.6 V G96 – Mt. Lemmon Survey MPS 603555
2015 04 29.37101 15 28 15.52 +33 47 21.8 19.6 V G96 – Mt. Lemmon Survey MPS 603555
2015 04 29.37372 15 28 15.48 +33 47 33.9 19.6 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.37650 15 28 15.07 +33 47 41.3 19.0 R H36 – Sandlot Observatory, Scranton MPS 603555
2015 04 29.37985 15 28 15.36 +33 48 00.4 19.9 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.38129 15 28 14.94 +33 48 01.9 19.0 R H36 – Sandlot Observatory, Scranton MPS 603555
2015 04 29.38607 15 28 14.85 +33 48 22.3 19.6 R H36 – Sandlot Observatory, Scranton MPS 603555
2015 04 29.39086 15 28 14.83 +33 48 42.1 19.5 R H36 – Sandlot Observatory, Scranton MPS 603555
2015 04 29.43256 15 28 14.51 +33 51 43.7 19.9 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.43869 15 28 14.39 +33 52 10.3 19.7 R 926 – Tenagra II Observatory, Nogales MPS 603555
2015 04 29.44480 15 28 14.34 +33 52 36.1 19.8 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 29.90402 15 28 13.52 +34 25 27.7   I67 – Hartley Wintney MPS 603556
2015 04 29.92650 15 28 13.21 +34 27 06.4   I67 – Hartley Wintney MPS 603556
2015 04 29.99689 15 28 12.25 +34 32 14.9   J95 – Great Shefford MPS 603556
2015 04 30.00249 15 28 12.09 +34 32 39.4   J95 – Great Shefford MPS 603556
2015 04 30.00774 15 28 12.05 +34 33 03.0 19.6 R J95 – Great Shefford MPS 603556
2015 04 30.21977 15 28 11.12 +34 48 36.5 19.4 R H36 – Sandlot Observatory, Scranton MPS 603556
2015 04 30.22606 15 28 11.02 +34 49 04.3 18.8 R H36 – Sandlot Observatory, Scranton MPS 603556
2015 04 30.24494 15 28 10.67 +34 50 27.8 19.0 R H36 – Sandlot Observatory, Scranton MPS 603556
2015 04 30.25123 15 28 10.57 +34 50 56.0 19.1 R H36 – Sandlot Observatory, Scranton MPS 603556
2015 04 30.28099 15 28 10.51 +34 53 09.1 19.6 V G96 – Mt. Lemmon Survey MPS 603556
2015 04 30.28192 15 28 10.47 +34 53 13.3   G96 – Mt. Lemmon Survey MPS 603556
2015 04 30.28286 15 28 10.46 +34 53 17.3 19.6 V G96 – Mt. Lemmon Survey MPS 603556
2015 04 30.28380 15 28 10.48 +34 53 21.4 19.7 V G96 – Mt. Lemmon Survey MPS 603556
2015 04 30.28473 15 28 10.45 +34 53 25.4 19.6 V G96 – Mt. Lemmon Survey MPS 603556
2015 04 30.42134 15 28 07.82 +35 03 28.8 19.2 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 30.42448 15 28 07.76 +35 03 42.9 19.2 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 30.42760 15 28 07.70 +35 03 56.9 19.2 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 30.43074 15 28 07.64 +35 04 10.3 19.4 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 30.43388 15 28 07.57 +35 04 23.8 19.7 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 04 30.43700 15 28 07.51 +35 04 38.1 19.5 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 05 01.23418 15 28 02.74 +36 04 15.7 19.5 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 05 01.24128 15 28 02.59 +36 04 48.5 19.4 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 05 01.24801 15 28 02.44 +36 05 19.4 19.4 R 926 – Tenagra II Observatory, Nogales MPS 603556
2015 05 06.27596 15 26 39.22 +43 01 55.7 19.1 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 06.280044 15 26 38.11 +43 02 13.9 19.8 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.28050 15 26 39.03 +43 02 20.0 19.0 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 06.283062 15 26 37.97 +43 02 30.6 19.8 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.28501 15 26 38.90 +43 02 45.0 19.2 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 06.286083 15 26 37.87 +43 02 47.0 19.6 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.289013 15 26 37.76 +43 03 02.7 19.7 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.291940 15 26 37.64 +43 03 18.6 19.5 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.295415 15 26 37.50 +43 03 37.4 19.6 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 06.29675 15 26 37.44 +43 03 44.8 19.5 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 06.30148 15 26 37.33 +43 04 10.4 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 06.30613 15 26 38.06 +43 04 40.5 19.1 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 06.30621 15 26 37.11 +43 04 35.6 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 06.31059 15 26 37.89 +43 05 04.6 19.4 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 06.31505 15 26 37.69 +43 05 28.8 19.1 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 07.260271 15 26 13.18 +44 32 21.8 19.0 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 07.263177 15 26 13.02 +44 32 37.8 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 07.266082 15 26 12.89 +44 32 54.3 19.3 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 07.268990 15 26 12.76 +44 33 10.5 19.4 V H21 – Astronomical Research Observatory, Westfield MPS 604700
2015 05 07.34871 15 26 10.31 +44 40 42.9 19.0 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 07.35316 15 26 10.07 +44 41 08.5 18.7 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 07.35762 15 26 09.81 +44 41 33.3 18.9 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 08.43782 15 25 36.23 +46 24 51.0 19.0 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 08.44396 15 25 35.93 +46 25 25.8 18.8 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 08.44948 15 25 35.64 +46 25 57.3 18.8 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 09.292361 15 25 09.09 +47 49 31.0 18.2 R 705 – Apache Point MPS 624242
2015 05 09.293656 15 25 09.07 +47 49 40.5 18.5 R 705 – Apache Point MPS 624242
2015 05 09.294954 15 25 08.83 +47 49 47.2 18.4 R 705 – Apache Point MPS 624242
2015 05 09.41337 15 25 02.82 +48 01 41.7 18.7 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 09.41783 15 25 02.56 +48 02 08.3 18.8 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 09.42228 15 25 02.28 +48 02 35.8 18.7 R 926 – Tenagra II Observatory, Nogales MPS 604700
2015 05 10.45808 15 24 20.92 +49 49 05.7 18.7 R 926 – Tenagra II Observatory, Nogales MPS 606442
2015 05 10.46257 15 24 20.65 +49 49 33.1 18.8 R 926 – Tenagra II Observatory, Nogales MPS 606442
2015 05 10.46708 15 24 20.39 +49 50 01.4 18.9 R 926 – Tenagra II Observatory, Nogales MPS 606442
2015 05 11.42919 15 23 37.49 +51 32 41.0 18.9 V 703 – Catalina Sky Survey MPS 606442
2015 05 11.43426 15 23 37.18 +51 33 14.3 19.1 V 703 – Catalina Sky Survey MPS 606442
2015 05 11.43932 15 23 36.75 +51 33 44.7 19.0 V 703 – Catalina Sky Survey MPS 606442
2015 05 12.34462 15 22 50.93 +53 13 34.7 19.0 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 12.34928 15 22 50.61 +53 14 05.6 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 12.35395 15 22 50.28 +53 14 36.7 19.1 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 13.284817 15 21 57.20 +55 00 44.4 19.1 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 13.286277 15 21 57.07 +55 00 54.4 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 13.287444 15 21 56.97 +55 01 02.5 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 13.288806 15 21 56.86 +55 01 11.9 19.2 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 14.174866 15 21 00.43 +56 45 24.1 19.6 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 14.180445 15 20 59.90 +56 46 04.2 19.5 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 14.186109 15 20 59.36 +56 46 44.8 19.5 V H21 – Astronomical Research Observatory, Westfield MPS 606442
2015 05 19.32945 15 11 11.13 +67 56 39.2 19.5 R 926 – Tenagra II Observatory, Nogales MPS 607383
2015 05 19.33293 15 11 10.31 +67 57 08.3 19.6 R 926 – Tenagra II Observatory, Nogales MPS 607383
2015 05 19.33643 15 11 09.52 +67 57 37.8 19.6 R 926 – Tenagra II Observatory, Nogales MPS 607383
2015 05 27.25956 11 12 37.60 +87 10 35.4 19.6 R 926 – Tenagra II Observatory, Nogales MPS 608731
2015 05 27.26595 11 11 16.07 +87 11 00.2 19.3 R 926 – Tenagra II Observatory, Nogales MPS 608731
2015 05 27.27232 11 09 54.39 +87 11 24.8 19.3 R 926 – Tenagra II Observatory, Nogales MPS 608731
2015 11 20.322205 07 32 10.43 +08 23 57.2 22.7 R 705 – Apache Point MPS 653606
2015 11 20.323208 07 32 10.36 +08 23 57.1 22.9 R 705 – Apache Point MPS 653606
2015 11 20.324211 07 32 10.25 +08 23 56.2 22.7 R 705 – Apache Point MPS 653606
2015 12 04.327044 07 13 10.89 +09 14 30.3 22.8 R 705 – Apache Point MPS 657378
2015 12 04.328050 07 13 10.73 +09 14 30.3 22.3 R 705 – Apache Point MPS 657378
2015 12 04.329051 07 13 10.68 +09 14 30.4 22.4 R 705 – Apache Point MPS 657378
2022 12 20.059242 23 45 34.276 -20 56 24.40 21.48 G V06 – Catalina Sky Survey-Kuiper MPS 1726919
2022 12 20.061940 23 45 35.179 -20 56 17.38 21.32 G V06 – Catalina Sky Survey-Kuiper MPS 1726919
2022 12 20.067338 23 45 37.015 -20 56 03.66 21.87 G V06 – Catalina Sky Survey-Kuiper MPS 1726919
2022 12 24.09230 00 07 31.92 -18 04 10.5 22.4 R 291 – LPL/Spacewatch II MPS 1726919
2022 12 24.11481 00 07 38.82 -18 03 13.5 22.5 R 291 – LPL/Spacewatch II MPS 1726919