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1627 Ivar (1929 SH)
Classification: Amor [NEO]          SPK-ID: 2001627
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 921 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .39661325953163 1.3364e-08  
a 1.863481492923384 1.8311e-10 au
q 1.124400023938173 2.485e-08 au
i 8.450367746398353 2.4169e-06 deg
node 133.1221730604873 1.5495e-05 deg
peri 167.7698113233515 1.5377e-05 deg
M 101.5580084379619 1.3233e-06 deg
tp 2458338.381467564748
(2018-Aug-07.88146756)
3.4209e-06 TDB
period 929.1504739809205
2.54
1.3695e-07
3.749e-10
d
yr
n .3874506983326281 5.7107e-11 deg/d
Q 2.602562961908596 2.5573e-10 au
  Orbit Determination Parameters
   # obs. used (total)      6740  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      32951 days (90.21 yr)  
   first obs. used      1929-09-25  
   last obs. used      2019-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36363  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-15 00:49:51  

Additional Information
 Earth MOID = .11161 au 
 Jupiter MOID = 2.65501 au 
 T_jup = 3.879 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a PDS3 (MPC 17262)  
magnitude slope G 0.60   n/a PDS3 (MPC 17262) Fit
diameter diameter 9.12 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
rotation period rot_per 4.795 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1985) Bull. Amer. Astron. Soc. 17, 726.]
[Lupishko, D.F.; Velichko, F.P.; Shevchenko, V.G. (1986) Kin. Fiz. Neb. Tel 2(5), 39-43; Kinematics and Physics of Celestial Bodies 2(5), 47-51.]
[Hahn, G.; Magnusson, P.; Harris, A.W.; Young, J.W.; et al. (1989) Icarus 78, 363-381.]
[Pravec, P.; Sarounova, L.; Wolf, M. (1996) Icarus 124, 471-482.]
[Kiss, L.L.; Szabo, G.; Sarneczky, K. (1999) Astron. Astrophys. Suppl. Ser. 140, 21-28.]
[Szabo, G.; Kiss, L.L. (2001) Publ. Astron. Dept. of Eotvos U. #11, p. 119-124.]
[Kaasalainen, M.; et al. (2004) Icarus 167, 178-196.]
[Skiff, B.A.; Bowell, E.; Koehn, B.W.; Sanborn, J.J.; McLelland, K.P.; Warner, B.D. (2012) Minor Planet Bull. 39, 111-130.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 41-47.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2015) Icarus 256, 101-116.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 172-183.]
[Crowell, J.L.; Howell, E.S.; Magri, C.; Nolan, M.C.; et al. (2017) Icarus 291, 254-267.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2018) Minor Planet Bull. 45, 366-379.]
geometric albedo albedo 0.15   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130  
B-V BV 0.872   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.00, mean=9.63, max.=19.11) deg.
U-B UB 0.459   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.00, mean=9.63, max.=19.11) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1627 Ivar (1929 SH)          Discovered 1929-Sep-25 by Hertzsprung, E. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-Jul-11 20:46 < 00:01 Earth 0.246545508312208 0.246545234984261 0.246545781640169 8.38353630623289 8.38224710293949 2415577.365474579 0.0752186589069587 13.8697840284766 5.92835018227846 11.9406996842686 1639004.48392525 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1906-Aug-17 18:28 < 00:01 Earth 0.393166759891152 0.393166405943714 0.393167113838611 13.4704511487777 13.4699480404195 2417440.269574848 0.0320665305520673 18.2880789550046 4.8788095729163 15.773402435005 3841018.69347472 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1929-Jul-19 10:23 < 00:01 Earth 0.166522671107407 0.166522531931929 0.166522810282904 6.5498787417553 6.5474353858048 2425811.932903436 0.0503628937123326 8.20514127500482 5.00004821879722 42.3533567542948 2426096.56849995 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1934-Aug-22 18:18 < 00:01 Earth 0.482950526550494 0.482950281459249 0.482950771641766 15.8821954187187 15.8818480394256 2427672.262353094 0.0381796269272463 13.3536729437574 4.60444044650218 25.4221072859967 7389922.17878408 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1957-Jul-21 08:58 < 00:01 Earth 0.150179759599964 0.150179693093575 0.150179826106352 6.29271317614692 6.2898931032138 2436040.873829352 0.0391980255546637 6.30282395368896 3.24364963243513 82.7014634126976 4153402.25074881 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1962-Aug-23 03:49 < 00:01 Earth 0.48643528536944 0.486435134169811 0.486435436569068 15.9410882495262 15.9407446330333 2437899.658922002 0.0415038714467551 9.44601065734201 4.0960572967525 41.9538832862639 12012803.9575412 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1985-Jul-16 15:26 < 00:01 Earth 0.200732927361476 0.20073287427358 0.200732980449371 7.31962650378433 7.31781283229455 2446263.143053080 0.0422916655267713 6.23614549127243 2.64492770799682 -89.2617855804944 4823812.34516682 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
1990-Aug-19 15:40 < 00:01 Earth 0.407668926565177 0.407668814535514 0.407669038594864 13.8788269980162 13.8783560647681 2448123.152497860 0.0414666516225553 8.14837959829012 3.16974059790134 52.2055544820123 16858763.7496528 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2013-Jul-06 21:16 < 00:01 Earth 0.321571413440882 0.321571396475363 0.3215714304064 10.4527093570599 10.4519166321305 2456480.385868915 0.0506140100180264 6.41655140369624 0.844051340978196 89.6278728549067 8987800.30047887 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2018-Aug-12 14:32 < 00:01 Earth 0.283998065824146 0.283997977772286 0.283998153876023 10.5006103341876 10.4997168211175 2458343.105638091 0.0393114972636499 7.00808212711993 3.24995824267518 61.6005463908019 16239908.2055741 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2041-Jun-29 06:58 < 00:01 Earth 0.435301562849971 0.435301494584176 0.435301631115765 13.6383374612605 13.6378886457635 2466699.789971616 0.050159374060213 6.4093172791906 3.3424673382182 83.2222552818277 14631534.1318452 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2046-Aug-06 06:42 < 00:01 Earth 0.177476670985416 0.177476590483239 0.177476751487592 7.83198517803836 7.83006804441919 2468563.779324507 0.0355270712434516 6.34142543094796 4.00846219982339 87.3773763946964 5905403.67102505 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2074-Aug-03 16:48 < 00:01 Earth 0.140738148656053 0.140738083511936 0.140738213800195 6.9712973698296 6.96858110862484 2478788.200017136 0.0377650784169251 6.8002561380394 2.91164632951294 -76.4614050278967 4421628.10732676 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2097-Jun-25 12:24 < 00:01 Earth 0.48654779012761 0.486547468672809 0.486548111582411 15.2814682436487 15.2811098775973 2487150.016753145 0.0274907843570749 16.0297161124567 6.30203742706799 -0.416725452510365 3991204.15173731 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2102-Aug-06 04:18 < 00:01 Earth 0.15695050795073 0.156950325188012 0.156950690713484 7.31419612634743 7.31187471579536 2489016.679000929 0.0509744735523919 10.0986159620438 5.20325214915877 -30.2452959161943 1862424.6354132 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2125-Jul-03 19:10 < 00:01 Earth 0.397284779784844 0.397284286339387 0.3972852732303 12.5975275806613 12.5969951852682 2497384.298655301 0.0177286226089857 24.6332489406135 6.41532704473864 -2.84208027362068 1982211.98006498 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2130-Aug-12 12:53 < 00:01 Earth 0.249441347112994 0.249440937934662 0.249441756291341 9.57319468190817 9.57207881516469 2499250.036797299 0.071981479167891 20.5605890220036 5.05431942126321 -7.39636893250732 1319478.01561819 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2153-Jul-13 00:49 < 00:01 Earth 0.271361820755995 0.271361335958706 0.271362305553284 9.21495455365152 9.21388895042758 2507620.534014052 0.0227218377333209 24.1907886155808 6.1570164218691 -2.32825055526532 1315696.33045523 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2158-Aug-20 02:44 < 00:01 Earth 0.375782388504107 0.375781988857879 0.375782788150357 12.8670285057158 12.866477435459 2509484.614131261 0.0721141668786917 20.2758572306172 4.36684316813194 -10.904242305378 2404075.58026702 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2181-Jul-21 20:30 < 00:01 Earth 0.166471391944019 0.166471147381418 0.166471636506621 6.7938116234948 6.79145530188812 2517856.354406016 0.0259650411571072 12.193840574906 5.6421102306321 0.234016335862974 1766929.13454597 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50
2186-Aug-26 02:04 < 00:01 Earth 0.473183265218677 0.473183114496836 0.473183415940519 15.5926232598591 15.592262125489 2519717.585914040 0.0583599117427641 9.42744258366724 3.73410270127999 -41.1117480960222 8087013.35513323 T 921 CATAB v2.0f-lin.ifort 2019-Dec-15 00:50:07 2019-Dec-15 00:50

Alternate Designations
 1929 SH = 1957 NA = 1957 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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