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JPL Small-Body Database Browser
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2531 Cambridge (1980 LD)
Classification: Main-belt Asteroid          SPK-ID: 2002531
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05583668217169215 3.8697e-08  
a 3.008454051698199 1.5361e-08 au
q 2.840471958985388 1.2063e-07 au
i 11.03294407230329 4.2823e-06 deg
node 104.3448359689521 2.2221e-05 deg
peri 32.05574513198474 4.4951e-05 deg
M 28.36662771504136 3.9134e-05 deg
tp 2458850.317714425881
(2020-Jan-01.81771443)
0.00020704 TDB
period 1905.958767809909
5.22
1.4597e-05
3.996e-08
d
yr
n .1888813158396218 1.4466e-09 deg/d
Q 3.176436144411011 1.6218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2379  
   data-arc span      32503 days (88.99 yr)  
   first obs. used      1931-01-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:37:56  

Additional Information
 Earth MOID = 1.86152 au 
 Jupiter MOID = 1.9064 au 
 T_jup = 3.220 
[ 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 11.0   n/a MPO502177  
diameter diameter 22.349 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.20 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.166   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2531 Cambridge (1980 LD)          Discovered 1980-Jun-11 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
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
1902-May-13 18:22 00:02 Jupiter 1.94746742067343 1.94746678634731 1.94746805500259 3.83189472577215 3.71665796049959 2415883.265110653 2.48121335310081 167.952486052729 18.4104508081936 -83.4982261963525 3616255.54995839 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
1939-Nov-07 01:32 00:02 Jupiter 1.96424041605245 1.96423989866051 1.9642409334454 2.96178082996535 2.81241939810532 2429574.563759245 1.83821570428509 124.379431696744 14.702730798588 83.3578481467297 3457911.0202971 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
1986-May-22 22:41 < 00:01 Jupiter 1.9200841533868 1.92008373838228 1.92008456839132 3.1982903762475 3.05725119678474 2446573.445121847 0.684755578056703 55.9701784230609 14.6853347669193 79.0941660014636 3260930.50028542 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
2032-Dec-22 14:46 < 00:01 Jupiter 1.94649680523539 1.94649643614529 1.94649717432549 3.7551843627264 3.63745859705084 2463589.115238550 0.468710828547107 51.1426776264513 15.1984393691799 83.7213495753629 3688437.0410595 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
2070-Jun-25 00:28 00:01 Jupiter 1.96711651274722 1.96711603728687 1.96711698820791 2.96163639327641 2.81249147181408 2477287.519140757 1.38158499960873 101.19962675515 15.7170635642404 85.5242182824793 3355953.08759717 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
2117-Jan-05 23:19 00:02 Jupiter 1.92573369078655 1.92573325175779 1.92573412981586 3.06788439633909 2.92099752805131 2494283.471683528 2.47198667381525 152.458135042546 15.3230533912552 83.7938158737949 3274709.1599113 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38
2163-Aug-04 15:35 00:03 Jupiter 1.94961266712466 1.94961207465908 1.94961325959512 3.66563718032442 3.5451350188189 2511295.149509817 3.39213639160312 222.647173823217 17.7069907741052 -86.7106801370034 3510649.49522944 T 35 CATAB v2.0f-lin.ifort 2020-Jan-28 18:38:25 2020-Jan-28 18:38

Alternate Designations
 1980 LD = 1931 AP = 1942 EQ = 1952 BG = 1963 FK = 1963 HD = 1971 VY = 1974 KH = A916 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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