NN Serpentis
type: Thing
description: star in the constellation Serpens
additional property: PropertyValue
  property ID: P18
  value: NN Serpentis binary.png
additional property: PropertyValue
  property ID: P31
  value: cataclysmic variable star
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  value: near-infrared source
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  property ID: P373
  value: NN Serpentis
additional property: PropertyValue
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  value: NN Ser c
additional property: PropertyValue
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  value: NN Serpentis d
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  property ID: P398
  value: NN Ser e
additional property: PropertyValue
  property ID: P528
  value: 2MASS J15525613+1254446
additional property: PropertyValue
  property ID: P528
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  value: NN Ser
additional property: PropertyValue
  property ID: P646
  value: /m/09gdjq_
additional property: PropertyValue
  property ID: P881
  value: eclipsing binary star
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additional property: PropertyValue
  property ID: P2583
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additional property: PropertyValue
  property ID: P3083
  value: V* NN Ser
additional property: PropertyValue
  property ID: P5667
  value: NN Ser
additional property: PropertyValue
  property ID: P6257
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additional property: PropertyValue
  property ID: P6258
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
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additional property: PropertyValue
  property ID: P10752
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confidence:
  popularity graph score:
    score: 0.01
    score pct: 1
    tier: established
    components:
      sitelinks: 11
      sitelinks norm: 0.026
      unique citations: 10
      unique citations norm: 0.004
      monthly pageviews: 0
      monthly pageviews norm: 0.0
  sitelinks: 11
  unique citations: 10
  monthly pageviews: 0
  yearly pageviews: 113
  pageview trend:
    m: 2026-06
    v: 43
  pageview trend:
    m: 2026-05
    v: 8
  pageview trend:
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    v: 4
  pageview trend:
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    max: 423
    pct: 2.6
  tier: established
claims:
  P18:
    value: NN Serpentis binary.png
    source count: 0
    confidence: 0.0
  P31:
    value: Q1059564
    source count: 1
    confidence: 0.2
    value label: cataclysmic variable star
  P31:
    value: Q67206785
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    confidence: 0.2
    value label: near-infrared source
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    source count: 1
    confidence: 0.2
    value label: ultraviolet source
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    confidence: 0.2
    value label: Serpens
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    value: NN Serpentis
    source count: 0
    confidence: 0.0
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    value: Q90124107
    source count: 0
    confidence: 0.0
    value label: NN Ser c
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    confidence: 0.0
    value label: NN Serpentis d
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    value label: NN Ser e
  P528:
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    source count: 1
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  P528:
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  P528:
    value: NN Ser
    source count: 1
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value: Gaia DR2 1191504471436192512
source count: 1
confidence: 0.2

value: Gaia DR3 1191504471436192512
source count: 1
confidence: 0.2

value: /m/09gdjq_
source count: 1
confidence: 0.2

value: Q1457376
source count: 1
confidence: 0.2
value label: eclipsing binary star

value:
  amount: +16.51
source count: 1
confidence: 0.2

value:
  amount: +16.91
source count: 1
confidence: 0.2

value:
  amount: +16.25
source count: 1
confidence: 0.2

value:
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source count: 1
confidence: 0.2

value:
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source count: 1
confidence: 0.2

value:
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source count: 1
confidence: 0.2

value:
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  amount: +1.9438
source count: 1
confidence: 0.2

value:
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  amount: +514.456
source count: 1
confidence: 0.2

value: V* NN Ser
source count: 1
confidence: 0.2

value: NN Ser
source count: 0
confidence: 0.0

value:
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  amount: +238.23383480169997
source count: 1
confidence: 0.2

value:
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  amount: +12.91234147561
source count: 1
confidence: 0.2

value: Q1264450
source count: 2
confidence: 0.4
value label: J2000.0

value:
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source count: 1
confidence: 0.2

value:
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  amount: +6600000
source count: 1
confidence: 0.2

value:
  unit: Q22137107
  amount: -59.084
source count: 1
confidence: 0.2

value:
  unit: Q22137107
  amount: -30.17
source count: 1
confidence: 0.2

value: 1191504471436192512
source count: 0
confidence: 0.0

source: Freebase Data Dumps
stated in qid: Q15241312
pub year: 2013

source: SIMBAD
stated in qid: Q654724

source: Precise mass and radius values for the white dwarf and low mass M dwarf in the pre-cataclysmic binary NN Serpentis
stated in qid: Q56061435

source: Up-to-date linear elements of eclipsing binaries
stated in qid: Q66617976

source: The Catalina surveys periodic variable star catalog
stated in qid: Q66618159

source: VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
stated in qid: Q66309067

source: Gaia Early Data Release 3
stated in qid: Q98668919

source: Two planets orbiting the recently formed post-common envelope binary NN Serpentis
stated in qid: Q57258133

source: Gaia Data Release 2
stated in qid: Q51905050

source: Evidence for an external origin of heavy elements in hot DA white dwarfs
stated in qid: Q56706393

wikidata id: Q2091284
domain: cataclysmic_variable_star
level: standard
html url: https://4ort.xyz/entity/nn-serpentis
markdown url: https://4ort.xyz/entity/nn-serpentis.md
facts url summary: https://4ort.xyz/entity/nn-serpentis/facts.json
facts url standard: https://4ort.xyz/entity/nn-serpentis/facts.json
facts url full: https://4ort.xyz/entity/nn-serpentis/facts.json
data source: Wikidata (CC0 / public domain)
license: https://creativecommons.org/publicdomain/zero/1.0/
api version: v1
served at: 2026-08-02T19:16:54.027639Z
entity updated at: 2026-05-03T21:19:00.258443+00:00Z
entity created at: 2026-04-10T23:57:06.317905+00:00Z