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1778 Alfven (4506 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284818535478058 3.3257e-08  
a 3.146233807523744 1.2436e-08 au
q 2.741999856238323 1.067e-07 au
i 2.474206682795939 3.4597e-06 deg
node 106.2373339829946 8.3943e-05 deg
peri 136.4143635358788 8.5057e-05 deg
M 358.8241353750884 1.2689e-05 deg
tp 2459007.157937919131
(2020-Jun-06.65793792)
7.1839e-05 TDB
period 2038.378908683766
5.58
1.2085e-05
3.309e-08
d
yr
n .1766109325731109 1.0471e-09 deg/d
Q 3.550467758809165 1.4033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3038  
   data-arc span      24152 days (66.12 yr)  
   first obs. used      1954-08-27  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:15:35  

Additional Information
 Earth MOID = 1.72976 au 
 Jupiter MOID = 1.46506 au 
 T_jup = 3.195 
[ 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 11.8   n/a MPO347531  
diameter diameter 20.623 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.82 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.095   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1778 Alfven (4506 P-L)          Discovered 1960-Sep-26 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
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
1906-Feb-16 06:30 00:02 Jupiter 1.56414189873451 1.56414100705711 1.56414279041022 1.5900501576523 1.20216836166048 2417257.770702436 2.0006388094446 104.716716313739 69.7935007159813 14.7284194673026 1305432.42395134 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
1916-Jul-07 00:00 00:02 Jupiter 1.50038645949212 1.50038587494984 1.50038704403678 1.50218380692575 1.06183036744304 2421051.500258220 1.78682679382363 232.842296268315 78.1635968339943 50.2337323566011 2296719.09811097 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
1926-Nov-19 07:42 00:02 Jupiter 1.90003868521467 1.90003772638631 1.90003964404336 3.20165339444633 3.05924826765987 2424838.820941725 1.52888879313387 71.3619470463885 17.9711959546938 -64.819995844116 2629209.57962044 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
1990-Jun-04 17:02 < 00:01 Jupiter 1.89999991215549 1.89999943114582 1.90000039316505 2.726015453233 2.55725586553686 2448047.209654598 0.518147338032292 36.0494817517277 13.3323804504607 -82.2197508604876 3049775.59326069 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2000-Oct-25 17:07 < 00:01 Jupiter 1.50227709783429 1.50227674982611 1.50227744584187 1.40423197262573 0.918812237112007 2451843.212906471 0.339325950325876 162.516145591976 111.488788021189 -2.02294107034187 2213442.4677481 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2011-Mar-17 06:39 < 00:01 Jupiter 1.55644431894001 1.556443957491 1.55644468038884 1.73136482287378 1.38174420935337 2455637.777271656 0.208591893035816 70.3383344125354 33.0101846092372 70.6802496585425 2696715.949787 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2021-Aug-06 02:36 < 00:01 Jupiter 1.98871527046285 1.98871485957676 1.98871568134881 3.64559848273269 3.52683419690105 2459432.608478754 0.232682978192532 32.8912349850241 16.1309108744941 -83.1279034460945 3881244.99262562 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2085-Feb-16 12:23 00:01 Jupiter 1.81122377770414 1.81122294941773 1.81122460599025 2.36780807555896 2.161298447507 2482638.015990172 1.20185613989865 45.0498425216034 11.3015784426096 -77.7661375375774 1897088.06922467 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2095-Jul-09 13:47 00:01 Jupiter 1.47617209838533 1.47617170511335 1.47617249165646 1.33674386181759 0.799556735185878 2486433.074408783 1.42473400687187 266.533072777097 146.133880957691 0.32060200002082 2006159.35592448 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2105-Nov-23 16:09 00:02 Jupiter 1.64087484871586 1.64087390934887 1.64087578808425 2.07363003469975 1.80763324904975 2490222.172838350 1.6875520093815 120.1455402425 8.06672162356822 85.0053501580345 2632102.11540861 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2179-Oct-29 19:18 00:03 Jupiter 1.71521171541524 1.71521005814255 1.71521337268608 2.02038001657028 1.75905542198101 2517225.304251168 2.87034208678381 76.0342341196525 11.7765171712721 86.868324450716 1344623.07411657 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2190-Mar-23 15:07 00:03 Jupiter 1.46456506448333 1.4645647376071 1.46456539135915 1.32581492800414 0.775304513902808 2521023.129665426 3.08298949408155 295.522249382665 179.37943342658 14.9332724633868 2154911.01113841 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15
2200-Aug-08 11:01 00:03 Jupiter 1.71683527204353 1.71683337524007 1.71683716885216 2.42389825855083 2.21100821622861 2524812.959034146 3.36445186021093 195.946330990868 7.2146244105596 -82.2101623952368 2687315.19136652 T 43 CATAB v2.0f-lin.ifort 2020-Nov-13 04:15:42 2020-Nov-13 04:15

Alternate Designations
 4506 P-L = 1936 HK = 1952 DD1 = 1958 FB = 1959 NN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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